Error: "Invalid class string (Exception from HRESULT: 0x800401F3 (CO_E_CLASSSTRING))"

Description

The application log shows this error:

"Invalid class string (Exception from HRESULT: 0x800401F3 (CO_E_CLASSSTRING))"

Version

All versions of eWay-CRM

Difficulty

Low

Resolution

If you see this error in the application log, check whether the user has installed up to date version of Microsoft Outlook Service Pack.

Where to find application log?