Wsus Server database restoration Problems

I have installed the WSUS server in my company, updated the file storage folder and the WSUS database have been backed up, and the server system crashes. Follow these steps to restore the server.

After you restore the WSUS database, you must reuse the WSUS application pool in IIS, as described in the following steps. This operation ensures that the restored database can be correctly synchronized with IIS. through IIS, you can manage websites with WSUS installed ). For more information about the application pool, see IIS Help. For more information about how to install WSUS, see the Microsoft Windows Server Update Services deployment documentation ). (Http://www.microsoft.com /)

Click Start, point to administrative tools, and click Internet Information Service (IIS) manager ".
In the tree, expand [WSUSServerName] And then expand "application pool ".
Right-click "WSUSpool" and click "reuse ".
Disable IIS manager.