I have installed WSUS in server 2012, most of updates are installed but 51 update failed to installed on clients, so I would like to know that why these update are failed to installed and how I can delete those failed update, as I tried to run Clean wizard which didnt work. for more information please check the attached link

Thanks in advance of your support.

https://social.technet.microsoft.com/Forums/getfile/717456

Hi Shoaib Momand,

Thanks for your post.

What exact error prompt about the failure installation?

For the Windows updates failure, there are many different reasons of the updates process failure. The effective way is that you could check related logs about the updates. All the process details will list in it.  When we install any windows update KBXXXXXX, a log file with same update KB name is created under c:\windows\ folder(you could set the location).

In addition, there are three update packages available for WSUS. Did you choose the correct OS-match ?

http://support.microsoft.com/kb/2938066

And you may also post in WSUS Forum for more support.

https://social.technet.microsoft.com/Forums/en-US/home?forum=winserverwsus

Best Regards,

Mary Dong