Have you inherited a XenApp 6.5 environment? Share your war stories in the comments.
:: Re-register the control (IE 32-bit only) regsvr32 "C:\Program Files (x86)\Citrix\ICAClient\Plugins\wficat.cab\wfica.ocx" For its time (2005–2012), the XenApp Web Plugin was a clever solution. It turned a clunky ICA file download into a one-click web experience. But by 2015, it was a legacy liability—an insecure, browser-bound bottleneck. citrix xenapp web plugin
:: Clear plugin cache (common fix for "cannot launch app") del /q "%USERPROFILE%\AppData\Local\Citrix\Plugins\Cache*.*" Have you inherited a XenApp 6
Here is a deep dive into what it was, how it worked, and why it eventually became obsolete. The XenApp Web Plugin (often just called the "Web Interface Plugin") was an ActiveX control (for Internet Explorer) and a NPAPI plugin (for Firefox) that acted as the client-side connector between a user’s browser and a Citrix Web Interface server. It turned a clunky ICA file download into
:: Check installed plugin versions (Windows) reg query "HKLM\SOFTWARE\Citrix\Plugins\XenApp" /v Version :: Verify ActiveX control is registered reg query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\wfica32.exe"
Do not invest time in fixing it. Invest time in migrating off it. Modern Citrix Workspace app + StoreFront or HTML5 access is faster, more secure, and infinitely less frustrating.