On the attempt to create an MS SQL Database via Plesk > Domains > example.com > Databases > Add Database as (MSSQL) the following error is displayed via the Plesk interface:
PLESK_ERROR: A file activation error occurred. The physical file name '\ qwecsq.mdf' may be incorrect.
#PPPM-11942 "It is now possible to manage databases on SQL Server 2008 and SQL Server 2008 R2 in Plesk."
- Plesk Obsidian 23 June 2020 (Windows)
If update is not possible for some reason you may try the following
As a workaround, replace the file DatabaseManagerMSSQL.PHP
Connect via the RDP
Go to %plesk_dir%admin\plib\
Create a copy of the file %plesk_dir%admin\plib\DatabaseManagerMSSQL.PHP
Download DatabaseManagerMSSQL.PHP and replace for the original file on %plesk_dir%admin\plib\