WinMgmt could not initialize the core parts;Windows couldn't log the RSoP (Resultant Set of Policies) session status- SOLVED. (Event Source: WinMgmt, Event ID:28; Event ID: 1090) Posted on November 29, 2011 by dpejic Event Type: Error Event Source: WinMgmt Event Category: None Event ID: 28 Date: 28.10.2011 Time: 11:33:42 User: N/A Computer: servername Description: WinMgmt could not initialize the core parts. This could be due to a badly installed version of WinMgmt, WinMgmt repository upgrade failure, insufficient disk space or insufficient memory. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Event Type: Error Event Source: Userenv Event Category: None Event ID: 1090 Date: 28.10.2011 Time: 10:43:41 User: NT AUTHORITY\SYSTEM Computer: servername Description: Windows couldn't log the RSoP (Resultant Set of Policies) session status. An attempt to connect to WMI failed. No more RSoP logging will be done for this application of policy. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. RESOLUTION: If you experience behavior when using WMI, such as application errors or scripts that used to work are no longer working, you may have a corrupted WMI repository. To fix a corrupted WMI repository, use these steps: Windows XP and Windows Vista Click Start, Run and type CMD.EXE Note: In Windows Vista, you need to open an elevated Command Prompt window. To do so, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. Type this command and press Enter: net stop winmgmt Using Windows Explorer, rename the folder %windir%\System32\Wbem\Repository. (For example, %windir%\System32\Wbem\Repository_bad). %windir% represents the path to the Windows directory, which is typically C:\Windows. Switch to Command Prompt window, and type the following and press ENTER after each line: net start winmgmt EXIT For Windows XP Service Pack 2 Click Start, Run and type the following command: rundll32 wbemupgd, UpgradeRepository This command is used to detect and repair a corrupted WMI Repository. The results are stored in the setup.log (%windir%\system32\wbem\logs\setup.log) file. For Windows Vista Open an elevated Command Prompt window. To do so, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. Type the following command: winmgmt /salvagerepository The above command Performs a consistency check on the WMI repository, and if an inconsistency is detected, rebuilds the repository. The content of the inconsistent repository is merged into the rebuilt repository, if it can be read. For Windows Server 2003 Use the following command to detect and repair a corrupted WMI Repository: rundll32 wbemupgd, RepairWMISetup Re-registering the WMI components The .DLL and .EXE files used by WMI are located in %windir%\system32\wbem. You might need to re-register all the .DLL and .EXE files in this directory. If you are running a 64-bit system you might also need to check for .DLLs and .EXE files in %windir%\sysWOW64\wbem. To re-register the WMI components, run the following commands at the command prompt: cd /d %windir%\system32\wbem for %i in (*.dll) do RegSvr32 -s %i for %i in (*.exe) do %i /RegServer Note that none of the above two methods restore the missing files related to Windows Management Instrumentation (WMI). So, below is a comprehensive repair procedure that restores all the missing WMI modules. In case of missing WMI modules, you may use the following method. Comprehensive rebuild method ( I had a problem on Win 2003 server and I tried all the above, nothing helped. I solved the problem when I applied Comprehensive rebuild method belowe) Important note: If you've installed a Service Pack, you need to insert your Windows XP CD with Service Pack integration (called as the Slipstreamed Windows XP CD). If you don't have one, you may point to the %Windir%\ServicePackFiles\i386 folder for a recent version of the system files required during WMI repair. Or you may create a slipstreamed Windows XP CD and insert it when prompted. Click Start, Run and type the following command, and press ENTER: rundll32.exe setupapi,InstallHinfSection WBEM 132 %windir%\inf\wbemoc.inf Insert your Windows XP CD into the drive when prompted. Repair process should take few minutes to complete. Then restart Windows for the changes to take effect.