Home > IIS > App-V, SCCM, & IIS 7.0 Error Codes

App-V, SCCM, & IIS 7.0 Error Codes


Problem
I integrated App-V with SCCM (which is pretty cool).  However, I was having problems with a few of my virtual application packages downloading to the local clients.  To troubleshoot this I had to investigate the IIS log files.  In my particular situation I found that there was a problem with a couple of file extensions with the error 404.7 (file extension denied) which is shown in the line from the log file below.

Example
2010-07-26 14:22:48 10.126.100.242 HEAD /SMS_DP_SMSPKGH$/ABC002EA/VFS/CSIDL_WINDOWS/Installer/$PatchCache$/Managed/00002109110000000000000000F01FEC/12.0.4518/PPSLAX.DLL.2.config – 80 – x.x.x.x Microsoft+BITS/7.5 404 7 0 210

Resolution
In the example there is a reference to a file with the extension of .config which is denied.  To fix this I referenced TechNet to fix the ApplicationHost.Config file found below.

Use the following procedure to modify requestFiltering for Windows Server 2008 and Windows Server 2008 R2.

  1. Open the applicationHost.config file located in the %Windir%System32InetsrvConfig directory on distribution points that are enabled for Allow clients to transfer content from this distribution point using BITS, HTTP, and HTTPS.
  2. Search for the <requestFiltering> section.
  3. Determine the file extensions that you will have in the packages on that distribution point. For each file extension that you require, change allowed to true.
    For example, if your package will contain a file with an .mdb extension, change the line <add fileExtension=".mdb" allowed="false" /> to <add fileExtension=".mdb" allowed="true" />.
    Allow only the file extensions required for your packages.
  4. Save and close the applicationHost.config file.

Reference
IIS 7.0 Error Codes: http://support.microsoft.com/kb/943891 
ApplicationHost.Config Fix: http://technet.microsoft.com/en-us/library/cc431377.aspx

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