How to Fix 0x8007042C (Windows Update)

Quick Answer: Error 0x8007042C indicates that Windows could not start the Background Intelligent Transfer Service (BITS) because a dependency service or group failed to start. The quickest fix often involves ensuring the BITS service and its dependencies are configured correctly and running, typically by checking service statuses and restarting them.

What Causes This Error

• Background Intelligent Transfer Service (BITS) is disabled or not running.
• One or more dependency services for BITS (e.g., Remote Procedure Call (RPC), DCOM Server Process Launcher) are disabled or not running.
• Corrupted system files or service configurations.
• Incorrect registry settings for BITS or its dependencies.
• Malware or antivirus interference preventing services from starting.
• Insufficient permissions for the services to operate.

Step-by-Step Fixes

Fix 1: Verify BITS and Dependency Services Status

Press the Windows key + R to open the Run dialog.,Type 'services.msc' and press Enter to open the Services management console.,Locate 'Background Intelligent Transfer Service (BITS)' in the list. Double-click it.,Ensure the 'Startup type' is set to 'Automatic' or 'Manual'. If the service status is 'Stopped', click 'Start'. Click 'Apply' and 'OK'.,Repeat the previous step for the following services, ensuring they are running and set to 'Automatic': 'Remote Procedure Call (RPC)', 'DCOM Server Process Launcher', and 'Windows Update'.

Fix 2: Run the Windows Update Troubleshooter

Press the Windows key + I to open Settings.,Navigate to 'Update & Security' (Windows 10) or 'System' > 'Troubleshoot' (Windows 11).,Click on 'Troubleshoot' (Windows 10) or 'Other troubleshooters' (Windows 11).,Select 'Windows Update' and click 'Run the troubleshooter'.,Follow the on-screen prompts and apply any recommended fixes.

Fix 3: Reset Windows Update Components

Press the Windows key + X and select 'Windows PowerShell (Admin)' or 'Command Prompt (Admin)'.,Type 'net stop wuauserv' and press Enter.,Type 'net stop bits' and press Enter.,Type 'net stop cryptSvc' and press Enter.,Type 'net stop msiserver' and press Enter.,Type 'ren C:\Windows\SoftwareDistribution SoftwareDistribution.old' and press Enter.,Type 'ren C:\Windows\System32\catroot2 catroot2.old' and press Enter.,Type 'net start wuauserv' and press Enter.,Type 'net start bits' and press Enter.,Type 'net start cryptSvc' and press Enter.,Type 'net start msiserver' and press Enter.,Restart your computer and attempt the Windows Update again.

Advanced Fixes

Advanced Fix 1: Perform a System File Checker (SFC) Scan

Press the Windows key + X and select 'Windows PowerShell (Admin)' or 'Command Prompt (Admin)'.,Type 'sfc /scannow' and press Enter.,Allow the scan to complete. This process may take some time.,If corrupted files are found and repaired, restart your computer.,Attempt the Windows Update again.

Advanced Fix 2: Check and Repair Disk Errors

Press the Windows key + X and select 'Windows PowerShell (Admin)' or 'Command Prompt (Admin)'.,Type 'chkdsk /f /r' and press Enter.,If prompted to schedule the check on the next restart, type 'Y' and press Enter.,Restart your computer. The disk check will run before Windows loads.,After the check completes and Windows boots, attempt the Windows Update.

Advanced Fix 3: Manually Register BITS DLLs to Resolve 0x8007042C

Press the Windows key + X and select 'Windows PowerShell (Admin)' or 'Command Prompt (Admin)'.,Type 'net stop bits' and press Enter.,Type 'net stop wuauserv' and press Enter.,Type 'regsvr32 qmgr.dll' and press Enter.,Type 'regsvr32 qmgrprxy.dll' and press Enter.,Type 'net start bits' and press Enter.,Type 'net start wuauserv' and press Enter.,Restart your computer and check if the error is resolved.

FAQs

Q: What is the BITS service?

A: The Background Intelligent Transfer Service (BITS) is a Windows component that facilitates asynchronous, prioritized, and throttled transfer of files between machines using idle network bandwidth. It is commonly used by Windows Update to download updates.

Q: Why does error 0x8007042C occur?

A: Error 0x8007042C typically occurs when the Background Intelligent Transfer Service (BITS) or one of its essential dependency services, such as Remote Procedure Call (RPC) or DCOM Server Process Launcher, fails to start or is disabled. This prevents Windows Update from functioning correctly.

Q: Can antivirus software cause 0x8007042C?

A: Yes, in some cases, overly aggressive antivirus or firewall software can interfere with the proper functioning of Windows services, including BITS and its dependencies, leading to error 0x8007042C. Temporarily disabling such software for troubleshooting purposes may be necessary.

Q: Is it safe to reset Windows Update components?

A: Resetting Windows Update components is generally safe. It clears the update cache and re-registers necessary services, often resolving issues without affecting personal files or system stability. However, it will remove your update history.

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