A "HTTP 500.19" Error Occurs When Loading Laserfiche 8 Web Applications Hosted on a 64-bit Server with Windows Server Update Services.

October 4, 2010 | KB: 1012684

https://support.laserfiche.com/kb/1012684/a-http-500-19-error-occurs-when-loading-laserfiche-8-web-applications-hosted-on-a-64-bit-server-with-windows-server-update-services-

Web Access 8, WebLink 8, Audit Trail 8

A "HTTP 500.19" Error Occurs When Loading Laserfiche 8 Web Applications Hosted on a 64-bit Server with Windows Server Update Services.

HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

InformationModule: DynamicCompressionModule

Error Code: 0x8007007e

This issue can occur when loading 32-bit ASP.NET Web applications after installing the 64-bit version of Windows Server Update Services (WSUS). WSUS enables the XPress compression scheme in IIS, but the 64-bit installation of WSUS only installs the 64-bit version of the compression scheme module.

See the following MSDN blog spot for troubleshooting information on HTTP 500.19 Errors in IIS 7.

Troubleshooting HTTP 500.19 Errors in IIS 7

See Scenario 6 for details on workarounds to either disable the XPress compression scheme, configure IIS to only load the 64-bit version of the module for 64-bit application pools, or to use a 32-bit version of the compression module.