When you try to start Windows Firewall, you receive the following error if the Firewall service is disabled or if your computer is infected with malware:
To resolve this issue, scan for and remove malware by following the steps in Method 1. If that doesn't work, try Method 2 to troubleshoot Windows Firewall problems.
Method 1: Scan for and remove malware
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If you haven't scanned your computer for viruses or malware recently, we strongly recommend that you do this. You can use the Microsoft Safety Scanner to remove malware from your computer. To do this, follow these steps:
- Go to the following Microsoft website: Microsoft Safety Scanner
(http://www.microsoft.com/security/scanner/en-us/default.aspx)
- Click Download Now. Follow the instructions to download and install the Microsoft Safety Scanner. When you are prompted, save the file to your desktop.
- When the installation is complete, go to your desktop and double-click the Microsoft Safety Scanner icon. It may be listed as msert.
- Click the Accept all terms of the preceding license agreement check box, and then click Next two times.
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- Click Quick Scan, then click Next.
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- The Microsoft Safety Scanner will scan your computer and remove all malware.
- Click Start, and then typeWindows Firewallin the Search programs and filesbox (Windows 7) or in the Start search box (Windows Vista).
- Click Windows Firewall.
- In the navigation pane (left pane) of Control Panel, click Turn Windows Firewall on or off.
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- Click Turn on Windows Firewall for each network location, and then click OK.
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If you still receive error 0x8007042c when you try to turn on Windows Firewall, go to Method 2
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Method 2: Troubleshoot Windows Firewall problems automatically
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To fix this problem automatically, click the Fix-It image below. If a security notification appears, click
Run.
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(http://go.microsoft.com/?linkid=9810866)
Microsoft Fix it 2530126Collapse this imageExpand this image
If you still receive error 0x8007042c when you try to turn on Windows Firewall, go to Method 3
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Method 3: Start Windows Firewall manually
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You can start the Windows Firewall services manually and make sure that they start automatically in the future. To do this, follow these steps:
- Click Start , and then type Services in the Search box.
- Right-click Services. and then click Run as administrator. If you are prompted, enter your administrator user name and password, and then press Enter.
- Scroll until you see Windows Firewall, and then double-click Windows Firewall.
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- Click the Startup type box,and then click Automatic.
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- If Service status is Stopped, click Start.
- Click Apply, and then click OK.
- Scroll until you see Base Filtering Engine, and then double-click Base Filtering Engine.
- If Service status is Stopped, click Start.
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- Click Apply, and then click OK.
- Restart Windows and confirm whether Windows Firewall is enabled.
If you still receive error 0x8007042c when you try to turn on Windows Firewall, go to Method 4
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Method 4: Start associate services
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To stop and then restart these services by using a batch file, follow these steps:
- Click Start, type Notepad in the Search box and then click Notepad in the programs list.
- Select the following text, right click the selected text, and then click Copy. Right-click anywhere in the Notepad window, and then click Paste.
sc config MpsSvc start= auto
sc config KeyIso start= auto
sc config BFE start= auto
sc config FwcAgent start= auto
net stop MpsSvc
net start MpsSvc
net stop KeyIso
net start KeyIso
net start Wlansvc
net start dot3svc
net start EapHostnet
net stop BFE
net start BFE
net start PolicyAgent
net start MpsSvc
net start IKEEXT
net start DcaSvcnet
net stop FwcAgent
net start FwcAgent
- In Notepad, Click File, click Save As, and then type Repair.bat in the File name box
- Click the Save as type box, and then click All Files (*.*).
- In the left pane, click Desktop, and then click Save.
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- On the File menu, click Exit.
- On your desktop, right-click the Repair.bat file that you saved in step 5, and then click Run as administrator.
Important If you are prompted for confirmation to stop a service, press Y on the keyboard, and then press Enter. - Try to start Windows Firewall again. If you can start Windows Firewall, delete the Repair.bat file. To do this, right-click Repair.bat, click Delete, and then click Yes.
If you still receive error 0x8007042c when you try to start Windows Firewall, you may want to contact Microsoft Consumer Security Support Center. To do this, go to
https://consumersecuritysupport.microsoft.com
(https://consumersecuritysupport.microsoft.com/default.aspx?mkt=en-us&st=1&wfxredirect=1)
.
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For more information about Windows Firewall, go to
Windows Firewall
(http://windows.microsoft.com/en-US/windows7/products/features/windows-firewall)
.
Microsoft offers Microsoft Security Essentials, a free security program that will help protect your computer from malware. For more information about Microsoft Security Essentials, go to
Consumer Security Support Center
(http://windows.microsoft.com/en-us/windows/security-essentials-download)
.
Article ID: 2530126 - Last Review: April 16, 2013 - Revision: 15.0
Applies to
- Windows 7 Enterprise
- Windows 7 Home Premium
- Windows 7 Professional
- Windows 7 Ultimate
- Windows 7 Home Basic
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