"HTTP 500 - Internal server error" appears when connecting to Smart Scan Service in Worry-Free Business Security (WFBS)

Worry-Free Business Security Advanced10.0 , Worry-Free Business Security Advanced8.0 , Worry-Free Business Security Advanced9.5

Last updated: 2021/08/28

Solution ID: KA-0001730

Category: Troubleshoot

The following error occurs on Windows 2008 server 64-bit with Internet Information Services (IIS) 7.0:

HTTP 500 - Internal server error

This procedure will enable you to configure IIS to run 32-bit applications on 64-bit windows. Before you do this, note the following:

IIS only supports 32-bit worker processes in Worker Process Isolation mode on 64-bit Windows.
On 64-bit Windows, the World Wide Web Publishing service can run 32-bit and 64-bit worker processes. Other IIS services like the IIS Admin service, the SMTP service, the NNTP service, and the FTP service run 64-bit processes only.
On 64-bit Windows, the World Wide Web Publishing service does not support running 32-bit and 64-bit worker processes concurrently on the same server.

To resolve the issue:

Compare the file size of the VSAPIInfo.dll file from the following folders:
- ..PCCSRV\WSS\isapi
- ..PCCSRV\WSS\x64
If the file size is identical, this means that the 64-bit VSAPIInfo.dll ISAPI module is installed. Otherwise, the 32-bit VSAPIInfo.dll ISAPI module is installed.
Open the IIS Manager.
Click Application Pools.
If you have not yet defined an application pool, do the following:
1. Click DefaultAppPool.
2. Click Set Application Pool Defaults.
Otherwise, select your application pool for Smart Scan Server Virtual Directories.
Under General section, do one of these:
- If the 32-bit VSAPI Info.dll module is installed, make sure that True is selected.
- If the 64-bit VSAPI Info.dll module is installed, make sure that False is selected.
Restart IIS.

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