Superfail, the third
- Oct 20th. 2007
- Posted in Dial-a-fix . Fixes . Microsoft . Windows 2000 . Windows Update
- Fixes . Incompetence . Windows 2000 . Windows Update . wuaueng.dll
- By DjLizard
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Thanks to astute reader Nate Coffey and Dial-a-fix, we've found another DLL registration bug.
The current version of wuaueng.dll provided to Windows 2000 service pack 4 clients has a bug in its DllInstallServer.
In the first picture is a "before" screenshot that shows that all of the SvcHost key values are here. This is a freshly installed Windows 2000 machine that only has Service Pack 4:
In this second picture, I have visited Windows Update, gotten the latest Windows Update client, closed my browser, and then unregistered the DLL using regsvr32 /u:
In this third picture, I have re-registered the DLL using regsvr32 /i, but it caused an error (0×80070057) and only one key was put back. The netsvcs key is lost at this point. In order to fix this, merge this default SvcHost key .reg file.
The error code 0×80070057 is E_INVALIDARG, or invalid parameters/arguments.
The current version of Dial-a-fix will accidentally trigger this because of the malformed DllInstallServer in wuaueng.dll. Once a new, fixed version of the Windows Update client is pushed out, Dial-a-fix will be able to help you again. I'll be filing this as a bug with Microsoft – I hope they fix it.
Edit: be sure to read Superfail part 2 for the solution for afflicted machines.