Windows update common error

If you experiment one of this problem or error code with windows update on win 7/8/10

• “windows update cannot currently check for updates because the service is not running. you may need to restart you computer”
• Error code 80072ee2
• Error code 80072efd

Here is a short solution, it has been tested in many case :
Command line :
net stop wuauserv
ren c:\windows\SoftwareDistribution softwaredistribution.old
net start wuauserv

Or delete the folder :
C:\Windows\SoftwareDistribution\Download

In regedit, remove the key :
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate
and restart the windows update service, launch a new search for update, that will work.