Problem With Windows Updates..!

Dear Experts,

I have an issue with Windows Updates ,

NOTE : For Windows updates we are using WSUS Server.!

Last Month i upgraded one server from windows 2008r2 to windows 2012r2 ,later i installed windows updates through wsus_OFFLINE tools all needed updates are were installed successfully until November month .However its time to do for December month security and critical  windows updates  Now i am facing an issue ,it was showing an error message ...

***************************ERROR MESSAGE********************************************

Could not check for new updates.
problem when looking for updates
Error:
Code 80072EE2 problem with Windows update.

******************************************************************************************************

By the Help of google i tried to fixed the issue , Below steps are performed please find it ,

Step 1: I checked GPO and WSUS every thing is fine.

Steps 2: i followed the below link and i performed all solutions (from Solution 1 to Solution 5) which there are mentioned.

 https://appuals.com/windows-update-error-80072ee2/

and also.......    https://www.repairwin.com/windows-update-80072ee2-error-solved/

Step3 : [  https://appuals.com/windows-update-error-80072ee2/ ] While performing the solution 3  " Deleting Software Distribution " All the updates which i performed earlier(until November 2019) completely gone..!! 

Kindly suggest me how to fix this issue.

Almost 5 servers are facing the same issue : After upgradation the OS  from 2008R2 TO 2012R2 issue with windows updates ITS UNABLE TO GET WINDOWS UPDATES OF UPCOMING MONTHS.