When using SafeGuard Enterprise Server with IIS 7.x / 8.x in combination with WSUS, an HTTP Error 500.19 may be seen when browsing the SafeGuard Enterprise webpage http://SERVERNAME/SGNSRV.
HTTP Error 500.19 - Internal Server Error Module StaticCompressionModule or DynamicCompressionModule Error Code 0x8007007e
This issue is because of the XPress compression schema module (suscomp.dll) which gets installed with WSUS. Compression schemes are defined globally and try to load in every Application Pool. It will result in this error when the 64bit version of suscomp.dll attempts to load in an Application Pool which is running in 32bit mode [enable32BitAppOnWin64]. 32bit mode is needed for SafeGuard Enterprise Server to run. The following sections are covered:
Applies to the following Sophos products and versions SafeGuard Enterprise Server 8.0SafeGuard Enterprise Server 8.1SafeGuard Enterprise Server 8.2
Operating System Windows Server 2008 (R2), Windows Server 2012 (R2)
<scheme name="xpress" doStaticCompression="false" doDynamicCompression="true" dll="C:\Windows\system32\inetsrv\suscomp.dll" staticCompressionLevel="10" dynamicCompressionLevel="0" />
5. Remove or disable the XPress compression schema from the configuration using the command below:
%windir%\system32\inetsrv\appcmd.exe set config -section:system.webServer/httpCompression /-[name='xpress']
6. Verify if the compression schema has been removed form the applicationhost.config. 7. Save the applicationhost.config and restart IIS services.
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