Site Component Manager detected that site system "%1" is running the Microsoft Windows Server operating system version %2 ...

%11Site Component Manager detected that site system "%1" is running the Microsoft Windows Server operating system version %2 service pack %3, which is not a supported operating system for this version of Configuration Manager.

Possible cause: You have not installed the required version of Windows Server on the site system.
Solution: Install the required version of Windows Server on the site system. Refer to your ConfigMgr Documentation to determine the required version.

Possible cause: You accidentally configured the site to use the wrong computer as a site system.
Solution: Remove this site system from the list of site systems for this site, and add the correct site system to the list. The list appears in the Site Systems node of the Configuration Manager Console.%0