Environment: Windows 2008 R2 on HP DL380 G7 with 32GB RAM running Hyper-V Windows 2008 R2 on Hyper-V Guests with minimum 4GB RAM WSUS pushed out SP1 to 20 of 27 servers (physical and virtual). I log into the system and it says that SP1 has been successfully installed. After about 24 hours, if I restart any of the servers that have SP1 installed, the server BSODs during system startup with the following: STOP: c0000142 {DLL Initialization failed} Initialization of the dynamic link library winsrv failed. Process is terminating abnormally. After beating my head against the wall for hours on end and Googling/Binging my brains out, I was able to get the servers back online by copying the backup registry files in RegBack into \windows\system32\config. This is 100% reproducible on each and every server I have, whether they're physical or virtual. Has anyone seen this behavior before and know what the magic fix is? TIA!

Did you first apply system update readiness patch? http://windows.microsoft.com/en-US/windows7/What-is-the-System-Update-Readiness-Tool Regards, Dave Patrick .... Microsoft Certified Professional Microsoft MVP [Windows]

I did not originally, but I just did on a non-SP1 server. I checked the log file and it says nothing was wrong (see below). ================================= Checking System Update Readiness. Binary Version 6.1.7601.21645 Package Version 11.0 2011-04-09 12:56 Checking Windows Servicing Packages Checking Package Manifests and Catalogs Checking Package Watchlist Checking Component Watchlist Checking Packages Checking Component Store Summary: Seconds executed: 174 No errors detected

Hi, Please try below: 1. Put the Windows Server 2008 R2 installation disc in the disc drive, and then start the computer. 2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears. 3. Select a language, a time, a currency, and a keyboard or another input method, and then click Next. 4. Click Repair your computer. 5. Click the operating system that you want to repair, and then click Next. 6. In the System Recovery Options dialog box, click Command Prompt. 7. Type “SFC /SCANNOW /OFFBOOTDIR=c:\ /OFFWINDIR=c:\windows” (without quotation marks), and then press ENTER. If the issue is not resolved, please right-click winsrv.dll in C:\Windows\System32 and click Properties. On the Details tab, check the file version. What is it? Tim Quan