Can’t install SQL Server Service Pack or CU

[Symptom]
When you install the SQL Server Service pack on MSCS Env, you would be watch this below windows and no more grow a progress bar..

And in node 2’s task manager, you can’t find msiinstal or hotfix.exe.

[Cause]
Node 2’s default share is deleted.

[Resolution]
Make default share.
Start regedit and change AutoShareServer’s value to 1
Location :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters\AutoShareServer