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: 0x8007042c. Resolution. To resolve this issue, scan for and remove malware by following the steps in Method 1.

Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page.

Automatically repair Windows Firewall problems, such as Windows fails to start Windows Firewall service (0x5) or Windows remote assistance is not working.

Windows could not start the Windows Firewall, DHCP client, or Diagnostic Policy on Local Computer. For more information, review the System Event Log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code 5.

Give your PC a Fresh Start. Resetting your PC lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact. In some cases, a clean installation may improve your device's performance, security, browsing experience, and battery life.

To enable the Auto-activation feature, follow these steps: Click Start, type regedit in the Start Search box, and then click regedit.exe in the Programs list. Note: If you are prompted for an administrator password or confirmation, type your password or click Continue.

Automatically update Windows 10, Windows 11, and Surface drivers and firmware (Recommended) Manually update Surface drivers and firmware (Advanced) You'll find the links for drivers after choosing your Surface model in the dropdown list in this section.

To reset the Hosts file back to the default, follow these steps according to your operating system: Windows 11. Windows 10. Windows 8.1. Windows 7 and earlier versions of Windows. More Information. Support for Windows XP has ended. Microsoft ended support for Windows XP on April 8, 2014.

Blue Screen errors (also called bug checks, STOP code errors, kernel errors, or BSOD errors) can occur if a serious problem causes Windows to shut down or restart unexpectedly to protect itself from data loss.