- Client Management Suite Version: 8.6 RU2
- Client Operating System along with Kernel Version: Windows 10 Pro 21H2
- From when you are facing this issue: Only noticed today
- Was there any recent changes?: No
Release: 8.6
As per the document of MsiExec.exe error messages, 1605 means "ERROR_UNKNOWN_PRODUCT"
ie. the product to uninstall does not exist.
The error 1605 indicates the app to uninstall does not exist.
If the product code in the uninstall command line is correct, this error can be ignored.