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RDP won't work after disabling windows firewall service

Posted on 2013-05-30
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Last Modified: 2013-06-05
I recently disabled the local windows firewall service on several 2008 servers.  I later found this isn't the best way to do this so I enabled the service again and then shut off the firewall via the control panel instead.  Now on about half of those machines RDP fails to work, normally just timing out.  I've made sure RDP is enabled and I'm using a domain admin account for access.  I've also checked the registry settings here to be sure its not disabled there:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\fDenyTSConnections (set to 0)

I'm sure this was caused by me disabling the firewall service but I don't understand why RDP fails even after its been turned back on.  Any assistance is much appreciated!
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Question by:First Last
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Expert Comment

by:Chris
ID: 39208468
Sounds too simple to be the cause but I've found that the RDP settings dialog can often be buggy, Try turning RDP off, applying and turning it back on.

This has fixed RDP issues for me countless times despite fDenyTSConnections being set to 0.

I think there are other registry values related to NLA which often get stuck on incorrect values - This is just a guess as to the cause though.
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by:First Last
ID: 39208555
I did try that a bunch of times but so far no luck there.
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Accepted Solution

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First Last earned 0 total points
ID: 39210980
This wound up being the rpc locator service being turned off
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by:First Last
ID: 39221482
Found own solution
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