"HTTP 500.0 Error - Internal Server Error" appears when opening the OfficeScan web console

- Updated:
- 19 Mar 2020
- Product/Version:
- OfficeScan 10.6
- Platform:
- Android 2.1+
- iOS 4.0+
- Symbian S60 3rd Edition
- Windows 2008 Datacenter
- Windows 2008 Enterprise
- Windows 2008 Server R2
- Windows 2008 Standard

Summary

The following error message appears when you try to open the OSCE web console:

HTTP Error 500.0 - Internal Server Error
Calling LoadLibraryEx on ISAPI filter "C:\Program Files (x86)\Trend Micro\OfficeScan\PCCSRV\PLM\DALComponents\DALFilter64.dll" failed

Details

Check these two settings in IIS 7.x or 8.x:

Check whether PLMDAL site or application is present under the OfficeScan website in IIS.
1. Open the IIS Manager.
2. Expand the ServerName > Sites > OfficeScan > officescan.
  Normally, the PLMDAL should appear on that list.
3. Right-click the officescan folder.
4. Select Add Application.
5. Enter "PLMDAL" as the alias.
6. For the Physical path, click the browse button (...) and navigate to the ...\PCCSRV\PLM\DAL\entry directory.
7. Click OK.
8. Restart the OfficeScan website.
9. Access the OfficeScan web console again and the issue should now be fixed.
Check ISAPI Filters in IIS.
1. Open the IIS Manager.
2. Expand Sites > OfficeScan.
3. Select ISAPI Filters.
4. Change the file from DALFilter64.dll to DALFilter.dll.
5. Restart IIS and check the web console again.