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Título
Core service won't start. Error: Delegate to an instance method cannot have null 'this' -
Descripción
Core service starts and stops immediately. Event viewer show error entry with text: "Delegate to an instance method cannot have null 'this'" -
Causa
WMI repository is corrupt -
Resolución
The issue is caused by the corrupt WMI repository. Attempt to open MMC -> Add/remove Snap-In -> WMI Control and connect to Local Computer ends up with error. Event Viewer show error connecting to WMI 0x80041002.
Attempt to repair WMI using the following script:
:: Start of WMI reset
@echo off
sc config winmgmt start= disabled
net stop winmgmt /y
%systemdrive%
cd %windir%\system32\wbem
for /f %%s in ('dir /b *.dll') do regsvr32 /s %%s
wmiprvse /regserver
winmgmt /regserver
sc config winmgmt start= Auto
net start winmgmt
dir /b *.mof *.mfl | findstr /v /i uninstall > moflist.txt & for /F %%s in (moflist.txt) do mofcomp %%s:: End of WMI reset
If this does not help, WMI needs to be recreated. Please note that this method is not recommended by Microsoft and should be only used as a last resort!
- Open services.msc, double click on Window Management Instrumentation service and set service to Disabled
- Stop the WMI service
- Go to c:\Windows\System32\WBEM\Repository folder
- Cut and paste all files from it to another location (c:\temp for example). Folder Repository should be empty
- Go back to services, change WMI service back to automatic and start it
WMI repository will be rebuilt from scratch.
Test WMI Control MMC snap-in that WMI is working and can be connected to. Start the Core service