Server error: http://go.microsoft.com/fwlink?LinkID=96177

SharePoint Central Administration displayed just “Server error: http://go.microsoft.com/fwlink?LinkID=96177” error message on a SharePoint Farm.

After little research, Found Hotfixes are installed, but the Products and Technologies wizard has not run! After running “SharePoint Products and Technologies Configuration Wizard” everything turned up.

In case psconfig fails, try: stsadm -o upgrade -inplace -url -forceupgrade

If you still get issues after upgrade, You can follow the Microsoft KB: http://support.microsoft.com/kb/944267