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Pega Platform Client Operating System and Browser Support


This content applies to On-Premises Services and Cloud environments.

Operating Systems

Platform Version Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 10 Microsoft Vista Mac OS X
Pega 8.5 supported supported supported supported supported
Pega 8.4 supported supported supported supported supported
Pega 8.3 supported supported supported supported supported
Pega 8.2 supported supported supported supported supported
Pega 8.1 supported supported supported supported supported
Pega 7.4 supported supported supported supported supported

Browser Support

Browser support varies for different versions of Pega Platform.

Platform Version Internet Explorer 11 Microsoft Edge Edge Chromium Mozilla Firefox Apple Safari (Mac OS X) Google Chrome
Pega 8.5 supported supported supported supported supported supported
Pega 8.4 supported supported

supported (see Note #5)

supported supported supported
Pega 8.3 supported supported supported (see Note #5) supported supported supported
Pega 8.2 supported supported supported (see Note #5) supported supported supported
Pega 8.1 supported supported supported (see Note #5) supported supported supported
Pega 7.4 supported supported   supported supported supported

Important Browser Notes

1. The performance of Pega software (like any other browser-based software) is dependent upon the browser that it is running on. For the Pega Infinity version 8.1 software, among the browsers we support (listed in the previous sections), Google Chrome performs the best, both in its rendering performance and its interactivity, as well as being superior in memory management and garbage collection. Mozilla Firefox, Microsoft Edge, and Safari (on Mac) are also closely comparable in performance to Chrome.

Microsoft Internet Explorer 11 performs the worst among all the supported browsers. Other browsers have innovated heavily over the last few years, while Internet Explorer 11 is purely in maintenance mode. It uses an old and proprietary rendering engine, runs as a single process on the operating system, and has suboptimal memory management. We do continue to support Internet Explorer 11, because many of our customers have standardized on IE11 due to other legacy software that only works on Internet Explorer 11 and prior versions of Internet Explorer.

For Pega Infinity, we recommend that our customers move away from Internet Explorer 11 in favor of using Chrome, Firefox, or Edge Chromium to get the best performance from their Pega applications.  In the next release of Pega Platform (8.6), Internet Explorer will no longer be supported.

2.  Microsoft is ending support for the Edge browser in March 2021.  Therefore, Pega will end support for the Edge browser in the next release of Pega Platform (8.6).  NOTE:  This refers to the Edge browser, not the Edge Chromium browser, which continues to be supported.

3.  The Cosmos React UI has a number of features, such as Landing Pages in Portals, which are based on the React Javascript library.   Some of the functionality in the React library does not have any support in the Microsoft Internet Explorer 11 browser; therefore, Pega components rendered with React do not work in Internet Explorer 11.  If you try to use Internet Explorer 11 with the Cosmos React UI, a message will display stating that this feature is not supported and recommending that you use a supported browser.

4. Pega Platform is certified on the latest version of these supported browsers at the time a given version of Pega Platform is released. Reasonable efforts are made to test previous versions of the browsers. If you have an issue with Pega Platform guardrail-compliant UI in a particular version of a supported browser type, contact Pega Support, and we will make commercially-reasonable efforts to resolve the issue.

5.  Microsoft Edge Chromium has been tested on the following versions of Pega Platform:

  • version 8.4:  8.4.3 and beyond
  • version 8.3:  8.3.4 and beyond
  • version 8.2:  8.2.7 and beyond
  • version 8.1:  8.1.8 and beyond

6. Beginning in Pega 7.3, ActiveX controls are deprecated (see the Microsoft Client Side Technologies Support section of this article). You should migrate to HTML5-based solutions for increased performance, better security, and reduced compatibility issues.

Limited support will be provided for issues with ActiveX, although several compatibility issues cannot be addressed.

7. Version 52.0 of the Mozilla Firefox browser blocks Silverlight (an NPAPI plugin) by default. For a limited time, Mozilla is offering a 64-bit Extend Support Release (ESR) of Firefox 52.0 that will support Silverlight through early 2018. For more information, see

8. Version 42.0 of the Google Chrome browser blocks Silverlight (an NPAPI plugin) by default. For details on which Pega tools are affected by Silverlight, see Client-side technologies. For details on re-enabling Silverlight, see

Chrome version 45.0 or later fully removes Silverlight support – instead, use IE, Firefox or Safari. For more information, see

9. Microsoft Edge will not support Silverlight. For details, see

10. The System Management Application (SMA) will only work with Microsoft Internet Explorer. No other browser is supported.

Microsoft Client Side End-User Technologies Support

Pega does not ship any of the client-side technology components listed below, and we are actively working to deprecate the functionality that uses them.  If ActiveX, Silverlight, or Flash is required for a feature, you must download and install that component from Microsoft.

ActiveX Support

As of May 2017, all ActiveX controls in Pega Platform are marked as "deprecated." A deprecated control will continue to "work" (assuming no other changes are introduced on the customer's Windows desktop), but they should not be used, and technical support for issues related to these controls will be limited.

Compatibility risks

While Pega 7.3 ActiveX controls will still run in IE11, you might experience compatibility issues between these ActiveX controls and the newest software on your desktop, such as Windows 10 or Microsoft Office 365. If your Pega application relies on ActiveX, you might want to avoid upgrading to Windows 10 or Office 365.

Security risks

ActiveX controls contain significant security vulnerabilities and are no longer supported in the Microsoft Edge browser on Windows 10. Pega strongly recommends that customers migrate ActiveX-based functionality towards HTML5-based, cross-browser solutions.

Silverlight Support

Microsoft has committed to supporting Silverlight 5 through October 2021. There are several optional runtime features that leverage Microsoft Silverlight technology (NPAPI plugins) and these will continue to be supported.

For details on which Pega tools are affected by Silverlight, see Client-side technologies.

NOTES: The following browsers no longer support Microsoft Silverlight technology:

  • Google Chrome (version 45 and later)
  • Mozilla Firefox (version 52 and later)
  • Microsoft Edge

Flash Support

Flash player is a plugin that you must download from Microsoft and install in your browser - the Pega Platform application does not install the Flash player automatically inside the end user browser. 

Adobe is planning to end-of-life Flash, and will stop updating and distributing the Flash Player at the end of 2020. For more information about this change, and Pega's plans, see  Adobe Flash Player Deprecation End of Year 2020. 

Microsoft Client Side Developer Technologies Support

Microsoft Office Support for Developers in Pega Platform

Starting with Pega 7.1.8, Designer Studio integration points with Microsoft Office have been steadily replaced with simple import/export paradigms that do not require ActiveX or Silverlight. Specific areas of Designer Studio might behave differently based on your exact version of Pega.

We recommend updating to the latest version of Pega Platform for an ActiveX-free development experience. This allows developers to generally use any version of Office that can read and write .docx, .xlsx, and .csv files.

Note on Office 365: There are two different types of Office 365 that are available:

  • Click-to-install
  • Click-to-run

Click-to-install is the traditional “InstallShield wizard” installation that most users are familiar with – they click on an installation file, and Office is installed on their local desktop. Click-to-install is supported by Pega Platform applications.

Click-to-run is a new Microsoft virtualization technology that helps users run multiple (usually older) versions of Office on the same computer. Click-to-run is not supported by Pega Platform applications.

Microsoft Visio

Starting with Pega 7.1, Microsoft Visio will no longer be used for flow editing. For customers upgrading older versions of PRPC who have flows created in Visio, the first time those flows are edited, they will automatically be upgraded to use Process Modeler, and will save as Process Modeler flows.

Visio is still required for Entity Relationship Diagrams. In versions of Pega Platform earlier than Pega 7.1.8, Visio is required to generate and also view ERDs.

In Pega 7.1.8 and later, documentation generation is being done on the server, which creates .vdx files. This type of file can be viewed by a Visio Viewer, and does not require a full Visio installation (although that will work). Any version of Visio Viewer that supports the .vdx file format can be used.

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