Windows Repairing System is a fake security application from from the same family as: Windows Activity Inspector, Windows Protection Servant, Windows Activity Inspector, Windows Tweaking Utility, Windows Tasks Optimizer, Windows Work Catalyst , Windows Attention Utility, Windows Inspection Utility, Windows Supervision Center, Windows Oversight Center. This rogue displays fake warning messages pushing users to buy a license.
If your PC is infected with Windows Repairing System use MBAM to remove the infection.