If Windows firewall problem started at the time your computer got infected save yourself a lot of time by running the following tool first.
Please download Farbar Service Scanner and run it on the computer with the issue.
- Make sure the following options are checked:
- Internet Services
- Windows Firewall
- System Restore
- Internet Services
- Press "Scan".
- It will create a log (FSS.txt) in the same directory the tool is run.
- Please copy and paste the log to your reply.
Quote
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MpsSvc Service is not running. Checking service configuration:
Checking Start type: Attention! Unable to open MpsSvc registry key. The service key does not exist.
Checking ImagePath: Attention! Unable to open MpsSvc registry key. The service key does not exist.
Checking ServiceDll: Attention! Unable to open MpsSvc registry key. The service key does not exist.
bfe Service is not running. Checking service configuration:
Checking Start type: Attention! Unable to open bfe registry key. The service key does not exist.
Checking ImagePath: Attention! Unable to open bfe registry key. The service key does not exist.
Checking ServiceDll: Attention! Unable to open bfe registry key. The service key does not exist.
If that's the case the fix is listed below. If you have a different error message, sign up at our forum and we'll try to help you out.
Following steps involve registry editing. Please create new restore point before proceeding!!!
How to:
XP - http://support.microsoft.com/kb/948247
Vista and Seven - http://www.howtogeek...system-restore/
Download Vista.zip or Seven.zip (depending on your Windows version) file from here: http://www.smartestc...y-network-keys/
Unzip the file.
You'll find several files inside.
Right click on bfe.reg file, click "Merge".
Allow registry merge.
Right click on mpssvc.reg file, click "Merge".
Allow registry merge.
Restart computer.
Click Start and in "Start search" type in:
regedit
Press Enter.
Registry editor will open.
Navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BFE
Right click on BFE key, click "Permissions"
Click on Add button, type Everyone and click OK.
Now click once on Everyone
Below, in "Permissions" pane checkmark "Alow" in "Full control" row.
Click OK.
In a set of files you downloaded in previous step find start_services.bat.
Right click on it, click "Run As Administrator" to run the fix.
Check on firewall issue.
IMPORTANT!
In case you have any "legacy_xxx" key missing you have to perform the following BEFORE importing any "legacy" key:
Please go to Start=>Run (alternatively use Windows key+R), type regedit and click OK.
Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root
Right-Click Root and select Permissions...
Under Security type while Everyone is selected put a check mark in the box under Allow next to Full Control.
Click Apply and OK.
When done with registry key(s) import.....
Please go back to the the Root key again while Everyone is selected remove check mark in the box under Allow next to Full Control and close the registry.
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NOTE. I'd like to thank narenxp from http://www.bleepingc...ter.com/forums/ for some very valuable advice
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If your problem has nothing to do with any infection then you can investigate further....
Go Start>Run type in:
services.msc (Vista and Windows 7 users type this in "Start search")
Click OK (Vista and Windows 7 users press Enter)
In services window scroll down to Window Firewall service.
Make sure "Startup type" is set to "Automatic".
If Windows Firewall service is missing it can be caused by missing/corrupted registry key(s).
Check following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess - this is Windows Firewall service key, which depends on following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MpsSvc - Windows Firewall Authorization Driver
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BFE - Base Filtering Engine
Also check in Device Manager if the above driver (Windows Firewall Authorization Driver) is present and correctly set.
Go to Device Manager, click on "View" tab and select show hidden devices.
Expand "No plug and play drivers", select Windows firewall authorization driver.
Right click on it and click "Properties".
Click on "Driver" tab.
Set "Startup" to "Demand" and click on "Start" button"
References:
MichaelPlatts - 5 parts article
Part 1 - http://blogs.technet...troduction.aspx
Part 2 - http://blogs.technet...ermissions.aspx
Part 3 - http://blogs.technet...ermissions.aspx
Part 4 - http://blogs.technet...ege-access.aspx
Part 5 - http://blogs.technet...pendencies.aspx
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