Troubleshooting
Problem
The is document describes the steps required to enable the cognosisapi.dll ISAPI module to run on Windows 2008 server 64-bit with IIS 7.x
Symptom
Error message "HTTP 500 - Internal server error"
Environment
Windows 2008 server 64-bit
Resolving The Problem
Regardless of whether you have installed the 32-bit or 64-bit version of Cognos, the cognosisapi.dll ISAPI module is a 32-bit DLL.
On 64-bit Windows, 32-bit processes cannot load 64-bit DLLs, and 64-bit processes cannot load 32-bit DLLs. If you plan to run 32-bit applications on 64-bit Windows, you must configure IIS to create 32-bit worker processes.
IIS can, by default, launch Common Gateway Interface (CGI) applications on 64-bit Windows, because CGI applications run in a separate process.
Configuring IIS to run 32-bit Web applications on 64-bit Windows IIS 7.x:
Before you configure IIS to run 32-bit applications on 64-bit Windows, 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.
Steps:
1. Open Internet Information Services (IIS) Manager and select ‘Application Pools’.
2. Select your application pool for the Cognos Virtual Directories, or if you have not defined an application pool, select the DefaultAppPool and on the right-hand side of the window click on ‘Set Application Pool Defaults’.
3. Under ‘General’ ensure that ‘Enable 32-bit applications’ is set to ‘True’.
4. Restart IIS.
5. Continue to configure IIS 7.x for the Cognos Gateway.
Related Information
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Document Information
Modified date:
15 June 2018
UID
swg21376323