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Old 01-11-2010, 10:36 AM   #1
Join Date: Nov 2009
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Posts: 119
Compatibility Mode permanently stuck on (checked and greyed out)

This morning I tried to run Steam, but I got the message that I shouldn't run it in compatibility mode.

I checked the setting and it's got Vista selected. However, the box and the selection menu are both greyed out. I cannot change the compatibility mode settings at all.

Yesterday, Steam was fine and this wasn't a problem. This morning I'm having these problems. Steam is the only application having this problem.

I am currently running Windows 7 64-bit. Anyone else have this issue?
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Old 01-11-2010, 10:39 AM   #2
Join Date: Nov 2009
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Posts: 119
Nevermind. I fixed my problem with the instructions found here.
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Old 07-19-2011, 11:11 AM   #3
Join Date: Jul 2009
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I just had this problem today and thought I woud say that this solution fixed the issue for me as well. I will post it below so others can find it easier on these forums.

Original post by ZeroHour at edugeek.net:

Reinstalling steam made no difference as well as trying to set compatibility settings under the shortcut. I eventually had a go of the application compatibility tool microsoft gives out to see that the settings saved on the machines local database and that triggering when I ran steam. I had a hunt through the registry and found the area where the keys are kept and deleted the key and my problems were gone.

To fix the issue:

Hit start->run->regedit
Go to key: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
Look for a entry with your path to steam.exe
Delete that entry
If you dont find it there try HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
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Old 03-18-2013, 02:16 PM   #4
Join Date: Apr 2010
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Posts: 60
i tried that and it didnt work.
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