PATLink PRO v2.0.6 installation
Some users experience problem with PATLink PRO installation.
Possible reasons for the problem are;
Windows Administrator permission is requred. Run setup file as administrator.

Windows require stronger password protection for Microsoft SQL installation. PDF instructions from link below explain how to manually install Microsoft SQL.
How to install SQL Server 2017 Express Edition_PATLink Custom Password_v7.3 (v2.0.6, SQL 2017).pdf