Post Applies for: Plesk for Windows.

ERROR:-
When you try to enter into management page for a sub domain you get an error:
Unable to create SubDomainManager object: Unable to create SubDomainPerformance object: WebServerManager::getSubDomainPerformance() failed: Unable to parse current performance.

CAUSE:-
Sub domain is not configured in IIS.

SOLUTION:-
It’s needed to be re-configured. You can do it using Plesk tool:

"%plesk_bin%\websrvmng.exe" --update-subdomain --vhost-name=< domain> --subdomain=< subdomain>

Example:

subdomain.domain.com has problems. To re-configure it:
"%plesk_bin%\websrvmng.exe" --update-subdomain --vhost-name=domain.com --subdomain=subdomain
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Best Regards,
Jahangir Alam.