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Windows Firewall service missing fom Windows 7

Posted on 2011-09-30
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Last Modified: 2012-06-21
Trying to find a solution for why Windows Firewall service is missing from one of our Windows 7 machines.  The end result is that inbound ports are blocked on the machine so I am unable to manage remotely.  At one point we had a group policy that Disabled the windows firewall service but discovered that for some reason that actually blocks all inbound ports.  The policy has been removed but on one particular machine, the Windows Firewall service is missing altogether.  I tried importing the HKLM\SYSTEM\CurrentControlSet\services\MpsSvc key from another working machine but it did not help.  

I've tried command prompts like net start sharedaccess but it errors out that the service is disabled.  The only thing I could think of was a .vbs script to start the service but I don't think that would make it appear in the services snap in.
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Question by:bfowler3
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Expert Comment

by:ded9
ID: 36891686
Run sfc /scannow from command prompt

Reboot computer and check.



Ded9
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Expert Comment

by:marcustech
ID: 36891738
Net start sharedaccess would be for the Internet Connection Sharing service, not the Windows Firewall one - what do you get from
net start MpsSvc
does that give you an error that the service is invalid?
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Author Comment

by:bfowler3
ID: 36891803
Marcustech,

You are correct.  The correct service is MpsSvc.  It states that System Error 5 has occurred, Access is denied.
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by:marcustech
ID: 36891850
Could be a permissions issue on the imported reg key (although that's likely to only be part of the problem...) - try the steps listed here:
http://support.microsoft.com/kb/943996
And report back please.
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by:johnb6767
ID: 36892308
FYI, SharedAccess was the XP service Name....

Once you imported that registry key....

Did you check the permissions? SYSTEM = Full Control/User = Read

From an elevated CMD prompt....

netsh advfirewall reset

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by:johnb6767
ID: 36892361
And I was referring to permissions on HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\MpsSvc specifically....
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Donald Stewart earned 500 total points
ID: 36892993
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Author Comment

by:bfowler3
ID: 36904930
Still working on trying some of the suggested solutions.  This computer is in a remote site so I am tasked with asking someone non-technical to try your suggestions.
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Author Closing Comment

by:bfowler3
ID: 36926846
That did it.  Thank you.
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