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Windows firewall and vnc will not start

Posted on 2016-07-15
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Last Modified: 2016-07-23
Cannot start the windows firewall on a windows 2003 Enterprise sp2 VM server which is running on a  Hyper V Windows 2008 R2 Std. server.
The message I get is as follows;
 Windows Firewall cannot run because another program or service is running that might use the network address translation component (ipnat.sys).
Have disabled the RRAS service and tried the command, "sc config ipnat start = disabled".
The host server is using a 172.20.0.6 address.
The 2003 server is on the domain and using a public ipaddress.
Any help with this would be appreciated.
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Question by:lrward
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Expert Comment

by:Bing CISM / CISSP
ID: 41713153
anything to do with VNC?

run NET START to list all running services and check if Windows Firewall is in the list.
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Expert Comment

by:John Hurst
ID: 41713166
Try a somewhat different way of stopping RRAS and starting it.

http://www.techrepublic.com/forums/discussions/windows-2003-firewall-not-working-conflict-with-ipnatsys/

Read down to the third post where the author says they solved this issue.
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Author Comment

by:lrward
ID: 41713194
Net Start comes back with access denied even though I started the command link with local Administrative privileges.

Also tried: My Computer -> Manage -> Services and Applications -> RRAS! you'll find it with a red box next to it, right click and click on DISABLE. Did not work either. Window Firewall still comes up with the same message.
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Expert Comment

by:John Hurst
ID: 41713205
Try running System File Checker on the server. Open an admin command prompt, run SFC /SCANNOW and allow to complete. It will be preferable to restart the server.
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Author Comment

by:lrward
ID: 41713211
Cannot access the 2003 server with VNC because the Windows Firewall setting do not allow the VNC server to be accessed.
Without getting into the Windows Firewall, I do not know how to change this.
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Expert Comment

by:John Hurst
ID: 41713215
SFC does not require VNC. How did you get into the server in the above posts?
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Author Comment

by:lrward
ID: 41713224
Have run SFC /scannow and it complete successfully.
I can access the 2003 server only through the Hyper V consul.
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Author Comment

by:lrward
ID: 41717206
Has been resolved by one of my programmers.
Thanks for the help.
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Author Comment

by:lrward
ID: 41717223
I've requested that this question be closed as follows:

Accepted answer: 0 points for lrward's comment #a41717206

for the following reason:

Problem has been resolved
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Expert Comment

by:John Hurst
ID: 41717224
You have not provided a solution anyone can use - just said it was solved. Please post a solution or delete the question if you cannot post the solution. Thank you.
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Accepted Solution

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lrward earned 0 total points
ID: 41717820
The solution according to my program was

disabled nat with "sc config ipnat start= disabled" and rebooted.
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Author Closing Comment

by:lrward
ID: 41725738
It worked!
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