Internet Explorer (IE) might run slowly or sluggish for users, but no errors are seen.

This occurs when run from a inside a published desktop or run as a published application. The issue is also seen in a Microsoft RDP session.

If you look in task manager from the XenApp server you can notice that Internet Explorer is taking a high amount of memory, CPU, or both. Users might be running graphic intensive webpages, streaming videos embedded in webpages, or web based applications.

 To fix the issue, you can perform one of the following resolutions:

Disable Hardware Rendering for IE

From Internet Explorers Tool Bar, go to Tools > Internet Options > Advanced Tab > select Use software rendering instead of GPU rendering check box.

Note: Hardware acceleration uses your PC's GPU to speed up graphics-heavy tasks like video streaming or online gaming. Turning this off might help solve display problems. Or high CPU usage when published on a XenApp server.

Run Internet Explorer with Active X Controls and Browser Extensions Off

1. From the XenApp Server, click the Start > All Programs > Accessories > System Tools > Internet Explorer (with no add-ons). If this works you can disable the add-ons one by one to see which is causing the problem.

2. This can be accomplished from Internet Explorer > Tools > Manage Add-ons.

3. From here you can go through the lists of Tool bars, Extensions, Search Providers, Accelerators, Tracking Protection and can Disable or Remove what is not needed or causing your issue.

4. Select an enabled extension and click the Disable button in the lower right corner of the window or right click an extension and select Disable from the pop-up menu.

   

5. If you would like to publish Internet Explorer with the Active X Controls and Browser Extensions disabled use the -extoff switch:
   Example:
   "C:\Program Files\Internet Explorer\iexplore.exe"  -extoff
   Note: Add-ons are apps that browsers use to interact with web content like videos and games. Incompatible or out-of-date add-ons might cause Internet Explorer to run slowly, crash, or prevent sites from displaying correctly. Before you turn off all add-ons, try starting Internet Explorer without add-ons to see if the problem goes away.

These recommendations are also Microsoft's recommendations when having issues with Internet Explorer (IE):

• What to do when Internet Explorer isn't working (IE 11)

• What to do when Internet Explorer isn't working (IE 10)

• What to do when Internet Explorer isn't working (IE 9)

Problem Cause

This is caused by an Active X Control, Browser Extension, or the hard acceleration feature enabled for Internet Explorer.