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When trying to install SQL Server 2008 Developer and Enterprise editions on a Windows 7 box I've got this message:

Rule "Restart computer" failed. A computer restart is required. You must restart this computer before installing SQL Server.

Of course I already restarted 10 times.

I've found a post in a forum saying that I should clear

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations

but I don't have such a key.

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Are you running any other versions or instances of sql server or any other servers for that matter? –  Troggy Dec 4 '09 at 19:52
I had sql server 2005 express installed with visual studio 2008. –  Pablo Dec 5 '09 at 10:01
Clearing that Reg Key worked for me –  Greg B Jan 7 '10 at 17:32

4 Answers 4

.... after installing SQL Server 2008 Express, put the value (might be multiple lines) back into this setting. So copy them somewhere!


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager is the path. "Session Manager" is the folder. "PendingFileRenameOperations" is the setting. Clear the value in that setting.

Common mistake:

You'll notice that there are more folders under the "Session Manager" folder. Don't look there. Those are sub-folders. Once you've clicked on the "Session Manager" folder, find the setting on the right.

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up vote 0 down vote accepted

Maybe there's a better solution, but the only one I could find was re-installing. Mental note: always install SQL Server first.

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like stated in http://blogs.msdn.com/b/hansr/archive/2006/02/17/patchreboot.aspx there is also an important key from windowsupdate

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

this must also be 0 or not present.

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When the tricks with clearing the registry keys don't work: - HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations - HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

You might try a reboot from the command line. Press Windows+R for the "Run" dialog box and type cmd and press enter to start the command line.

The command for a forced reboot with zero seconds delay is "shutdown -r -f -t 0".

This might be handy when you use a Windows 8 computer or a Win8.1 because a shutdown is sometimes not a real shutdown but a "hybrid shutdown" which is in fact a hibernate state to enable "Fast Boot".

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