Error "V-139-52224-1020 unable to add user domain\user. The system returned the following message: Unspecified error" occurs while trying to add the users in the Backup Exec Desktop and Laptop Option (DLO) console
The file XPDLOShareu.dll is missing from the "C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn" folder.
To resolve this issue, download from this TechFile and copy the appropriate version of the file XPDLOShareu.dll (64bit or 32bit) to the "C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Binn" folder.
Once unzipped the files will need to be renamed:
XPDLOShareu.dll_32bit --> XPDLOShareu.dll
XPDLOShareu.dll_64bit --> XPDLOShareu.dll