Citrix: Web Interface delay on First Page

Recently I did an installation of the Citrix Web Interface 5.4 and noticed a delay on displaying the first page after restarting the server, this problem happened also when I restarted the IIS Service.  I found CTX117273:



After restarting IIS, or rebooting the Web Interface server, it takes up to one minute to get the Welcome page for the first user.


  • Install Web interface 5.0.1.
  • Restart IIS.
  • Connect to a Web Interface site. The first connection is very slow and it takes up to one minute to get the Welcome page for the first user.
  • All other connections are normal until you restart IIS again.


This issue is caused by a CRL check sent to Verisign. If the Web Interface server cannot access the internet, the CRL check fails and times out.

  • Check in IIS for the version that is in use with the Web Interface site.
    Modify Aspnet.config  in the following directory
    C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727 (If Web Interface uses .Net framework v2.0.50727)
  • Add the following lines to your ASPNET.CONFIG or APP.CONFIG file:
    <?xml version=”1.0″ encoding=”utf-8″?>
    <generatePublisherEvidence enabled=”false”/>
The target server for the WI installation was indeed a local server with no internet access what so ever so it matched the problem. After changing the .config file I didn’t experience the delay after restarting IIS.
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Kees Baggerman

Kees Baggerman is a Staff Solutions Architect for End User Computing at Nutanix. Kees has driven numerous Microsoft and Citrix, and RES infrastructures functional/technical designs, migrations, implementations engagements over the years.

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