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I just ran Windows Update on a new Windows 2008 Standard Edition SP2 64-bit server today. Since then Windows Explorer keeps opening folders in new windows when I double click on them.

I've double check that the folder options are correct:

Organize -> Folder and Search Options -> Browse folders -> Open each folder in the same window - this is selected.

I've googled around and there was suggestion that changing the following registry keys Default value should work:

HKEY_CLASSES_ROOT\Folder\shell\explore\command HKEY_CLASSES_ROOT\Folder\shell\open\command

Changing from:
%SystemRoot%\Explorer.exe /separate,/e,/idlist,%I,%L
To:
%SystemRoot%\Explorer.exe /same,/e,/idlist,%I,%L or %SystemRoot%\Explorer.exe /e,/idlist,%I,%L

I've even rebooted the machine and tried different accounts but the behaviour remains the same.

I've inspected each update but nothing jumps out as being a change to the behaviour of Explorer.

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closed as off topic by Kev, splattne Jan 18 '10 at 14:30

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1 Answer 1

up vote 0 down vote accepted

Looks like the issue was related to the IE8 update provided by Windows Update. Removing that reverted the server's Explorer behaviour to normal again.

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