RSLinx Classic version 4.60.00 (CPR 9 SR 16) works within the system requirements of all Rockwell Automation® software products. For the latest compatibility and driver support information, refer to the Product Compatibility and Download Center.

Hardware requirements

• Intel® Core i5 Standard Power processor
• 4 GB of memory (RAM)

Software requirements

The following operating systems are supported and recommended*:

• Windows Server® 2025 Standard (Recommended OS)**
• Windows Server 2022 Standard (Recommended OS)**
• Windows Server 2019 Standard**
• Windows Server 2016 Standard**
• Windows® 11 Professional (Recommended OS)
• Windows 11 Enterprise (Recommended OS)
• Windows 11 IoT Enterprise 2024 LTSC 64-bit (v24H2)***
• Windows 11 Enterprise 2024 LTSC 64-bit (v24H2)
• Windows 10 Enterprise 64-bit
• Windows 10 Professional 64-bit
• Windows 10 Enterprise 2021 LTSC 64-bit (v21H2) (Recommended OS)
• Windows 10 IoT Enterprise 2021 LTSC 64-bit (v21H2)***
• Windows 10 Enterprise 2019 LTSC 64-bit (v1809)

*The recommended operating systems have priority for Microsoft Patch Qualifications with Rockwell Automation® software.

**Windows Server Datacenter editions are supported. The key difference between Windows Server Standard and Datacenter edition is how Microsoft licenses the operating system. Windows Server Standard includes licensing for up to two virtual machines per core license, making it suitable for lightly virtualized environments. Datacenter edition allows unlimited virtual machines per core license, offering better value for highly virtualized or cloud-scale deployments.

***Windows 11 IoT Enterprise LTSC and Windows 11 Enterprise LTSC are binary equivalents but are licensed differently. Windows 10 IoT Enterprise LTSC and Windows 10 Enterprise LTSC are binary equivalents but are licensed differently.

Rockwell Automation's software installation policy is based on the lifecycle information of Microsoft operating systems. If an operating system's lifecycle state is approaching its end, you may encounter a warning message when trying to install Rockwell Automation software on it.

The following table illustrates how the installation policy is applied using the current operating systems. For the latest compatibility information, refer to the Microsoft Lifecycle Policy and Product Compatibility and Download Center.

Rockwell Automation Test Environment

Rockwell Automation tests software products under a standard configuration of operating systems and antivirus software. For additional information, see the Knowledgebase Document ID: PN24 - Rockwell Software Products and Antivirus Software.

Software compatibility

RSLinx Classic version 4.60.00 (CPR 9 SR 16) has been tested, and is compatible, with the following products:

• Studio 5000 Logix Designer version 38.00.00 or earlier
• FactoryTalk View version 16.00.00
• FactoryTalk Services Platform version 6.60.00
• FactoryTalk® Activation Manager version 5.02.00
• Connected Components Workbench 23.00.00
• EDS Subsystem 38.0.00

RSLinx Classic version 4.60.00, Studio 5000 Logix Designer version 38.00.00, and device profiles that ship with Studio 5000 Logix Designer version 38.00.00 are not compatible with RSNetWorx version 9.00.00 or earlier. RSNetWorx and the DeviceNet Tag Generator must be upgraded to a version later than 9.00.00 before installing these products.

Security requirements

To learn about designing a secure networking environment, review this publication:

• Configuring Firewalls for FactoryTalk Services Platform (publication FTSP-RM001) shows the ports, services, and firewall rules necessary for FactoryTalk® Services Platform components to function properly.
• Converged Plantwide Ethernet (CPwE) Design and Implementation Guide (publication ENET-TD001) is built on, and adds to, design guidelines from the Cisco Ethernet-to-the-Factory (EttF) solution and the Rockwell Automation Integrated Architecture™.

To learn about implementing application-level security using FactoryTalk Security, review this publication:

• FactoryTalk Security Application Technique (publication SECURE-AT002) explains how to use FactoryTalk Security to implement authentication and authorization in your industrial automation system and how to enforce product-specific security for applications like Studio 5000 Logix Designer, FactoryTalk View, and FactoryTalk AssetCentre.

To learn about designing and implementing an architecture with device-level security using CIP Security, review these publications:

• System Security Design Guidelines Reference Manual (publication SECURE-RM001) provides guidelines for how to use Rockwell Automation products to improve the security of your industrial automation system.
• Configure System Security Features User Manual (publication SECURE-UM001) describes the system-level configuration requirements to use a controller that has achieved IEC 62443-4-2:2019 certification.
• CIP Security with Rockwell Automation Products Application Technique (publication SECURE-AT001) explains how to implement the Common Industrial Protocol (CIP) Security standard in your industrial automation control system (IACS).

There are no new or enhanced features in RSLinx Classic version 4.60.00.

• The EDS files might not be uploaded automatically for some devices, for example, PowerFlex Drives. First identified in RSLinx Classic version 4.40.00. [Jira 3140364]
  

  Corrected in RSLinx Classic version 4.60.00.

• RSLinx Classic may exit if click Cancel button when adding a SLC 500 (DH485) Emulator driver.
When adding a SLC 500 (DH485) Emulator driver in RSLinx Classic, if you click Cancel on the Configure SLC 500 (DH485) Emulator Driver dialog box, RSLinx Classic may exit unexpectedly on Windows 7 operating systems. First identified in RSLinx Classic version 2.57.00. [269134]

There is currently no work around for this anomaly.

• RSWho may fail to upload and register all the EDS files from unregistered devices, if there are too many EDS files (for example, 400 files) or multiple RSWho instances (for example, 5 instances). First identified in RSLinx Classic version 3.80.00. [357152]
To work around this problem, upload and register several EDS files (for example, 10 files) with a single RSWho instance each time, or manually upload and register the EDS files using the EDS Hardware Installation Tool.

• If an EDS file is removed using the EDS Hardware Installation Tool while RSLinx Classic is running, the EDS file cannot be uploaded and registered in the RSWho, neither automatically nor manually. First identified in RSLinx Classic version 3.80.00. [357375]
To solve this problem, restart RSLinx Classic to upload and register the EDS file (either automatically or manually).

• When running RSLinx Classic for an extended period of time (For example, two days) and a new device appears with a yellow question mark, RSLinx Classic may not automatically upload the device’s EDS file. First identified in RSLinx Classic version 4.10.00. [144513]
To solve this problem, restart RSLinx Classic and ensure the "Enable EDS File Automatic Upload" is selected.

• When creating a TCP driver (Remote Devices via RSLinx Gateway) in RSLinx Classic on workstation “A”, and use it to remotely browse an EtherNet/IP driver in RSLinx Classic on workstation “B”, if there is no TCP connection between RSLinx Classic from workstation “B” and the devices under that EtherNet/IP driver, the devices cannot be browsed or displayed under TCP driver in RSLinx Classic workstation “A” either. First identified in RSLinx Classic version 4.10.00 [Jira 96767]
To solve this problem, establish TCP connection between the RSLinx Classic workstation and the devices before browsing them remotely. For example, right-click the device to check the Device Properties dialog box, and then click Cancel.

• The icons of some modules may not be updated in RSLinx Classic after and EDS is installed with a new icon. First identified in RSLinx Classic version 4.12.00. [Jira 625333]
To avoid this situation, restart RSLinx Classic or remove the previously registered EDS files, and then upload and re-register them.

• Installing a very large quantity of EDS files (for example, over 25,000) or a high number of large EDS files could cause RSLinx Classic to fail during startup. First identified in RSLinx Classic version 4.12.00. [Jira 848905]
To avoid this problem, either reduce the number of EDS files in the system or refer to Knowledgebase Document ID: BF25849 - RSLinx Crashes when a Large Number of EDS files (over 25,000) are Registered.

• FactoryTalk View Studio startup performance tends to degrade over time when there are a large number of devices on the network. First identified in RSLinx Classic version 2.56.00. [218691]
To solve this problem, compact existing harmony topologies through RSLinx Classic:

• In RSLinx Classic menu bar, click File > Compact Harmony, or
• In RSLinx Classic Launch Control Panel, click Tools > Compact Harmony.

• If RSLinx Classic is using USB to communicate with a Logix controller and the computer is restarted, the Logix controller will not respond to RSLinx Classic after the computer restarts. First identified in RSLinx Classic version 4.31.00. [Jira 2127683]

  Restart the controller to re-establish USB communications or use EtherNet/IP to communicate with the controller instead of USB.

• The RSLinx Classic uninstaller allows the removal of the FactoryTalk Services Platform, FactoryTalk Activation Manager, and other tools before uninstalling RSLinx Classic, even though it warns that this is impossible. First identified in RSLinx Classic version 4.50.00. [Jira 3792424]

  There is currently no workaround for this anomaly.

• The RSLinx Classic uninstaller cannot uninstall Rockwell Windows Firewall Configuration Utility nor remove the firewall exceptions, including OPCEnum.exe and Port 135 TCP. First identified in RSLinx Classic version 4.50.00.[Jira 3792448]

  To avoid this problem, manually remove the firewall exceptions.

RSLinx Classic version 4.60.00 has no changes in functionality since the last release.

The following information is provided to help you better understand the behavior of RSLinx Classic version 4.60.00 in other applications or under certain circumstances.

Backup and restore

When you run the Backup/Restore utility, the Restart RSLinx Classic when finished checkbox is not available in the Shutdown RSLinx Classic dialog.

BOOTP/DHCP tool

The host name information of a 1756-ENBT device cannot be configured through the BOOTP/DHCP tool. To solve this problem, use RSLinx Classic to configure the device information.

Bridged IP address

RSLinx Classic changes to a bridged IP address list may not be retained if the RSLinx Classic Harmony service is shut down quickly after the modification is made.

Once a bridged IP address configuration is modified, RSLinx Classic can exit, but the harmony service, RSObserv.exe, must continue to operate for 10 to 15 minutes to ensure the changes are saved.

Data Monitor

If a controller contains tags with the ULINT or LREAL data type, RSLinx Classic may incorrectly display their Radix and Type information in Data Monitor.

Data type

RSLinx Classic doesn’t support data communication with the following data types:

• LREAL
• UDINT
• ULINT
• UINT
• USINT
• TIME
• LTIME
• TIME32
• LDT
• DT

Device Description File Installation Tool

The EDS Hardware Installation Tool is renamed to Device Description File Installation Tool since RSLinx Classic version 4.40.00.

DDE/OPC

To receive unsolicited DDE messages from a processor through a DHRIO module, and through an ENET module over an Ethernet network:

1. Select your DDE topic from the DDE/OPC Topic Configuration dialog box.
2. Select Advanced Communication, and then click Remote.
3. Manually enter the Remote Link ID of the DHRIO channel through which the message is being sent.

Newly created DDE topics default to 20 for the Limit Maximum Packets. It makes the updates more symmetrical for the group of optimized packets for each topic. For the same functionality on older DDE topics, set the Limit Maximum Packets on the DDE/OPC Topic Configuration dialog box, Data Collection tab to 20, or the best value for the PLC and access method.

When configuring DDE/OPC topics to receive unsolicited messages from a ControlNet device, from the DDE/OPC Topic Configuration dialog box, select the Advanced Communication tab and select Local route for Local or Remote Addressing.

When setting up a DDE topic to a remote processor via ControlLogix Gateway, ensure that unsolicited messages coming to RSLinx Classic work properly by setting the Remote Link ID to match the Link ID of the remote module (such as DHRIO).

DF1 driver

The DF1 Polling Master Driver and DF1 Slave Driver do not support hardware handshaking control.

DH+ and DH485

You cannot download data to a Standard PanelView on a DH+ network if your computer is connected to the Standard Panel View via RSLinx Classic > EtherNet > 1756-ENBT Backplane > 1756-DHRIO > DH+ network path.

RSLinx Classic does not support DH connected to a 1770-KF2.

Duplicate nodes are not detected when configuring a 1784-KT(D) card. When configuring a 1784-KT(D) card, use a station address that is not in use by another device.

The 1770-KF2 and 1770-KF3 do not support offlink messages. Therefore, when using these devices, you cannot browse through bridges such as 1785-KA, 1785-KA5, or 1756-DHRIO.

When using auto configuration on a 1770-KF2 or1770-KF3 device, you must set the Station Number to that of the 1770-KF2 or1770-KF3 device before clicking Auto-Configure. Otherwise, Auto-Configure tries to detect the device at the currently selected station, and if the device is a PLC, Auto-Configure configures to the PLC rather than the 1770-KF2 or1770-KF3 device.

If the 1784-PCMK driver is a duplicate node, all stations in RSWho appear as a question mark with a red X.

Since both channels of a PKTXD card share the interrupt, you cannot configure one channel for SoftLogix 5 and the other for RSLinx Classic. You can configure RSLinx Classic and SoftLogix 5 to use separate PKTX(D) cards.

If you plug in your DH-485 UIC device on a computer running a Windows or Windows Server operating system, and the computer has already installed the 1752-L24BBB SmartGuard controller, the DH-485 UIC device will not be recognized by the Plug and Play feature. To solve the problem, follow these steps:

1. Press Windows and R on your keyboard to open the Run dialog box.
2. Type devmgmt.msc, and then click OK to open the Device Manager.
3. In the Device Manager window, expand the Universal Serial Bus controllers tree.
4. You will see an entry for FTDI FT8U2xx Device. Right-click it, and then click Properties.
5. On the Driver tab, click the Update driver button.

If you change the Station Number (node address) of a DH-485 UIC device without first removing or re-installing the device, the device will stop functioning. If you want to change the Station Number, you must re-install the DH-485 UIC device, and then use the Configure UIC devices dialog box to set the Station Number.

Driver certificate

Computers running Windows that are not connected to the internet may not verify some of the RSLinx Classic files. It is because the root certificate is not present on the local machine.

To correct this issue, the RSLinx Classic installation process adds a certificate verisign-univ.cer issued by VeriSign Universal Root Certification Authority to the Trusted Root Certification Authorities store for a local computer.

This certificate can be found in the Console Root > Certificates (Local Computer) > Trusted Root Certification Authorities > Certificates folder of the Windows Microsoft Management Console MMC.EXE tool’s certificates Snap-in option.

EtherNet and EtherNet/IP

EtherNet/IP driver cannot recognize PLC5 and SLC devices when using Remote subnet.

Prior to version 4.10, RSLinx Classic's configuration for the Accept UDP Messages on Ethernet Port setting was enabled by default. Beginning with RSLinx Classic version 4.10, this setting is disabled by default, to permit FactoryTalk Linx to allocate the CIP port (44818) for CIP Security. RSLinx Classic used this port to receive unsolicited messages from controllers and to function as a Gateway to permit remote instances of RSLinx Classic running on different workstations to interface with locally connected networks. To re-enable these functions, click DDE/OPC > Options... > General, and then select Accept UDP Messages on Ethernet Port. Before making this change, ensure the CIP Port 44818 is free by disabling "Listen on EtherNet/IP encapsulation port" advanced driver settings in FactoryTalk Linx.

FactoryTalk Activation Manager

If you have disconnected one of the servers used for activation from the network, RSLinx Classic may stop responding for up to two minutes during startup, as it checks the remote server for an activation file.

To work around this problem, go to Find Available Activations in FactoryTalk Activation Manager, select Update Activation Search Path, and then clear the checkbox of the disconnected server (or delete the path to the server).

Hardware considerations

This version of RSLinx Classic does not run on Alpha, MIPS, or Power computer processors.

Do not use the power saver option on your computer when running RSLinx Classic. Use either the BIOS or Control Panel to disable this option.

Installation

When you uninstall RSLinx Classic, the DTL32.dll file remains in the system directory if it is locked by another application.

RSLinx Classic version 4.20.00 provides a 64-bit OPC DA server connection (RSLinx Local OPC Server) for the users who utilize the RSLinx Classic Single Node or OEM editions with 64-bit clients.

Impact of Microsoft deprecating VBScript

Microsoft announced the phased deprecation of VBScript in 2024. VBScript is now an optional feature beginning in Windows 11 24H2 and Windows Server 2025. Many FactoryTalk software products released before September 1, 2026, use VBScript during installation.

RSLinx Classic versions 4.60.00 and earlier require VBScript for installation. Installation will fail if VBScript is not enabled.

To mitigate the problem, enable VBScript manually. For more information, see the Knowledgebase Document ID: IN41397 - Impact of Microsoft deprecating VBScript. FactoryTalk software products released after September 1, 2026, no longer rely on VBScript.

Mitigation for Microsoft DCOM Hardening patch

In response to Microsoft Distributed Component Object Model (DCOM) Hardening patch (MS KB5004442), the minimum DCOM authentication level used by Rockwell Automation products was raised to Packet Integrity.

IMPORTANT:

Installing this product’s latest version with earlier unpatched versions of other FactoryTalk products or products using Classic OPC DA connections may cause a loss of connectivity due to the difference in DCOM authentication level used. For additional information, see the Knowledgebase Document ID: IN39461 - Microsoft DCOM Hardening Information TOC.

Microsoft releases the DCOM Hardening patch in response to CVE-2021-26414. This patch elevates the minimum DCOM authentication level that is required to establish a DCOM connection. DCOM is used by many Rockwell Automation products and may be affected by the change that is made by the Microsoft patch. For additional information about the affected Rockwell Automation products, see the Knowledgebase Document ID: PN1581 - Product Notification 2022-01-001 - Rockwell Automation products unable to establish proper DCOM connection after installing Microsoft DCOM Hardening patch (MS KB5004442).

Module statistics

For 1794-AENT and 1756-ENB modules, module statistics on the Port Diagnostics tab may show zeros even though the modules work properly.

No-interrupt configuration

RSLinx Classic supports no-interrupt configurations when using Allen-Bradley network cards; however, it is recommended to assign an interrupt to increase driver performance.

Operating system

RSLinx Classic is a 32-bit application. While it will function on 64-bit edition of Windows operating systems, the RSLinx Classic Single Node and OEM activations may not operate with a Windows 64-bit application running on the same computer. Windows 64-bit forces 32-bit and 64-bit applications to run in different processes that causes RSLinx Classic Single Node and OEM to see the 64-bit application as running remote and thus prevents it from using the OPC interface. In this case, the system should be upgrade to RSLinx Gateway to work with 64-bit applications.

Repair software

If you click Change to repair FactoryTalk Services Platform from Control Panel when UAC is enabled, you may see the error 1722 message.

To work around this problem, click OK to close the error message, and then retry to repair FactoryTalk Services Platform. [276317]

RSWho browse

RSWho with the RSLinx Classic Gateway cannot be used to go online with a processor in RSLogix 5 or RSLogix 500 software. To select a processor connected to a RSLinx Classic Gateway, configure an RSLinx Classic driver, using the Remote Devices via RSLinx or 1756-ENET Gateway driver.

Running mode

If RSLinx Classic is running as a service, there is no graphical user interface (GUI). If you must configure RSLinx Classic, you must be in application mode. To switch between running as a service or application, use the RSLinx Classic Launch Control Panel.

Security considerations

Information on the security considerations related to using Rockwell Automation products can be found in the Rockwell Automation Knowledgebase, including:

• File extensions created by Rockwell Automation software, firewall rules, and service dependences, see Knowledgebase Document ID: IN40928 - Security Software Considerations to Prevent or Mitigate Impacts to Rockwell Automation Software Products.
• TCP/UDP ports used by Rockwell Automation products, see Knowledgebase Document ID: BF7490 - TCP/UDP Ports Used by Rockwell Automation Products.

Server OPC Data (Local)

Offline browsing does not work to an ACD file on a different network machine. The ACD file must be on the local machine.

OPC browse is not supported for .NET OPC applications.

In Studio 5000 Logix Designer, for controllers that support External Access attribute, you can change the External Access attribute for a tag while online with the controller.

The following scenarios may require you to restart RSLinx Classic and data clients:

• If a controller is replaced with a different controller, even if it has the same program. [265753]
• If a different program is downloaded to the controller.
• If a different program is loaded into the controller from an SD card.
• If tag attributes for tags on scan are changed and a new program is downloaded to the controller.
• If tag attributes for tags on scan are changed after an Alias Topic switch. [265756, 266168]

The Logix L8 controllers (ControlLogix5580 and CompactLogix5380) added several new unsigned (USINT, UINT, and UDINT) and 64-bit data types (LREAL and ULINT) with version 32 firmware. Because these data types are not supported by FactoryTalk software, RSLinx Classic version 4.10.00 will prevent access to these types. Tags or structure members using these types will not appear in the FactoryTalk Live Data Tag Browser used by many of the FactoryTalk Software packages and any attempt to access data of these types will return an error.

SLC

When downloading a program to an SLC 500, stop all data connections active to that station. Under certain instances, the processor may fault if applications continue to poll the SLC during a download.

SmartGuard

If you are installing a SmartGuard driver on a computer that already has RSLinx Classic installed, make sure to re-start RSLinx Classic after installing the SmartGuard driver. If you do not restart RSLinx Classic, you are not able to configure the driver.

Although you can communicate over the DeviceNet network through the USB port of a SmartGuard device, the USB-to-DeviceNet bridging capability is limited. For example, you cannot configure 1734-ADN or 1753-DNSI modules through SmartGuard. Use another DeviceNet interface to configure these devices.

SoftLogix

RSLinx Classic does not reread a User Defined Structure list for SoftLogix™ until the topic is stopped and restarted.

Unsolicited message

When receiving unsolicited messages from an SLC 500 processor via a 1785-KA5 bridge device, the DDE topic's remote configuration must be set to Internet mode. In addition, in the SLC 500 message instruction, the remote bridge node address must be set to 0.

Unsolicited messages sent from a PLC or other node to RSLinx Classic causes errors if no DDE clients or C-API applications are running to receive them.

Unattended or silent install

Use command-line parameters to perform an unattended or silent installation of the software.

Installation Command-line parameters

The following table identifies the installation command-line parameters. Command-line parameters are case-insensitive. However, if a specified value includes a space, be sure to enclose the value in quotation marks (for example, "value with spaces").

Error codes

The following table identifies the error codes that can be returned by an installation.

User account

RSLinx Classic does not start properly when it is configured to run as an administrator, while you attempt to log on as a standard user.

User-defined type

Block reads and writes do not work with user defined types (for Logix5000 controllers).

RSLinx Classic does not support an entire User-Defined Type (UDT) tag as a destination element for unsolicited message. You can only configure a member of the UDT tag as a destination element in a message instruction in the ControlLogix processor.

User documentation

Topics in Compiled Help Module (CHM) files do not show when the help file is opened from a remote computer or Universal Naming Convention (UNC) path.

To avoid this problem, use one of the following methods:

• Open the help files from the installation DVD or copy them to a folder on your local computer.
• If you want the help files to be accessible from a network directory (shared folder), use Registry Editor to modify certain registry entries.

If you attempt to view the Support Services (support.hlp) or Activation (copyprot.hlp) information, an error message shows and the online help files are not displayed. To view the Support Services or Activation information, refer to the RSLinx Classic Getting Results Guide.

Certificates

The following certificates are installed while installing Rockwell Automation software.

• Use Microsoft Management Console (MMC) to view the certificates in Console Root > Certificates (Local Computer) > Trusted Root Certification Authorities > Certificates.
  • 2016-Rockwell-Driver-SHA1.cer
  • 2016-Rockwell-SHA256.cer
  • DriverCodeSigning2012-1.cer
  • Drivers-10-10-2018.cer
  • Drivers-11-03-2017.cer
  • Drivers-12-06-2016.cer
  • DriversSHA1-10-10-2018.cer
  • Drivers-SHA1-11-27-2017.cer
  • Logix-11-04-2016.cer
  • Rockwell_2013.cer
  • Rockwell_2014.cer
  • Rockwell_2015.cer
  • rockwellcert2010.cer
  • rockwellcert2013.cer
  • VeriSign Class 3 Public Primary Certification Authority -G5 2036.cer
• Use Microsoft Management Console (MMC) to view the certificates in Console Root > Certificates (Local Computer) > Trusted Publishers > Certificates.
  • MicRooCerAut2011_2011_03_22.cer
  • RA - Enterprise Root Certification Authority.cer
  • VeriSign Universal Root Certification Authority.cer