However, it is undeniable that this plan is far from perfect. Nowadays, more and more people are beginning to regard Windows Defender as a reliable security tool. Could you please help us to resolve this problem?” We tried to find some answer from support forum but we didn't find any. We have got the error message as you can see on the attached pic when we try to update the windows defender security center. The definition update always run automatically on all computer but some computers is not running well.
