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Right mouse click on Windows 7 desktops hangs PC

Posted on 2014-11-06
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Last Modified: 2015-03-22
We have 4 desktops HP running Windows 7 that hang when right mouse clicking.  When we disconnect from the network and login locally we do not have the issue.  Tried reinstalling drivers (nic,monitor etc). These machines recently had new 27" Viewsonic monitors installed.  Tried replacing monitor with original one.
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Question by:lcoiro
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Expert Comment

by:dlb6597
ID: 40426759
you have an invalid entry in your right-click context menu. these are located in the registry at HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers and HKEY_CLASSES_ROOT\AllFilesystemObjects\shellex\ContextMenuHandlers. Check each of the entries for things that are obviously retired, etc.  Some entries will have a reg_sz value that looks like "{12ABDD920-42A0-1069-A2E4-08002B30309D}", you may need to search your registry for occurence of that...then look at the value under the subkey InprocServer32...it will usually contain a path to a DLL or executable...I am guessing you will find one that points to a network location.
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Author Comment

by:lcoiro
ID: 40426979
We looked through the context menu and have not found anything pointing to the network.  can the entries be deleted without harming the system?
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Expert Comment

by:dlb6597
ID: 40427001
no harm to the system itself, you'll just lose those individual entries in the right-click menu...you export those keys, then delete one at a time (I think you have to reboot inbetween these changes so Explorer re-reads these keys.)...to see when the problem goes away...then you have a copy to add the correct/needed ones back in. (just delete the offending line(s) from the reg export...
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Expert Comment

by:dlb6597
ID: 40427008
you might check out shellexview from nirsoft. it will scan all areas of the registry that house context menu entries...you can look through the path column to look for network locations...

http://www.nirsoft.net/utils/shexview.html
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Author Comment

by:lcoiro
ID: 40433507
We did not find any context menu entries pointing to network locations.  Any other suggestions would be appreciated.
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Expert Comment

by:dlb6597
ID: 40433539
I would download procmon.exe from sysinternals/microsoft (or open a command line and run it directly \\live.sysinternals.com\tools\procmon.exe

this tool basically logs all registry, file system and network activity...it produces a lot to look through, but the answer will be in there somewhere in the form of file not found, path not found, access denied etc.  Take some time to familiarize yourself with the filters...and you can log only files, only reg activity, etc.

clear the log, set any filters, then right click...wait a few seconds and hopefully you will be able to stop the logging (depends on how your hang is occuring...
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Author Comment

by:lcoiro
ID: 40443237
Still did not find resolution.
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Accepted Solution

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lcoiro earned 0 total points
ID: 40448178
Problem solved by replacing memory.
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Expert Comment

by:dlb6597
ID: 40448253
All four machines?  Interesting.
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Author Closing Comment

by:lcoiro
ID: 40680763
This solved the issue.
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