Windows Update Error Code 0x80240438 can appear when Windows can’t connect properly to the update service, which causes updates to fail downloading or installing. The problem can stem from network connectivity issues, proxy settings, firewall restrictions, corrupted Windows Update files, or damaged system components.
Start with the simpler solutions below and continue with the advanced steps if the error remains.
What Causes Windows Update Error Code 0x80240438?
Several issues can trigger this error, including unstable internet connectivity, incorrect proxy settings, firewall or antivirus interference, corrupted Windows Update components, damaged system files, problems with update services, or outdated drivers. Since this error often involves communication with Windows Update, check your network connection first.
Here’s how to fix Error Code 0x80240438:
Check your internet connection
Visit a few websites to confirm your connection is stable. Restart your router if pages load slowly or fail, and try another network if possible. If connection-related problems continue, see our guide to Windows Update Error Code 0x8024402C.
Check your proxy settings
On Windows 11: Settings → Network & internet → Proxy, and review the settings. Turn off a manual proxy if you don’t need one, then restart your computer. If your organization requires a proxy, check with your administrator before disabling it.
Temporarily check firewall or antivirus settings
Third-party security software can interfere with Windows Update connections. Temporarily check whether it’s blocking the process, then re-enable it after testing — don’t leave your computer unprotected for long. If Windows Update works with it disabled, adjust its settings to allow Windows Update services.
Run the Windows Update Troubleshooter
On Windows 11: Settings → System → Troubleshoot → Other troubleshooters → Windows Update → Run. On Windows 10: Settings → Update & Security → Troubleshoot → Additional troubleshooters → Windows Update. Restart and check for updates afterward.
Run System File Checker
Open Command Prompt as administrator and run sfc /scannow. Wait until the scan reaches 100%, then restart. If the scan identifies corruption and the update still fails, see our guide to Windows Update Error Code 0x800F0900.
Run the DISM tool
If SFC doesn’t resolve it, run each command below one at a time in an elevated Command Prompt, letting each finish first:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Restart after the final command completes, then check for updates.
Restart Windows Update services
Press Win + R, type services.msc, and press Enter. Find “Windows Update,” right-click it, and select Restart. Also check Background Intelligent Transfer Service (BITS) and start it if stopped. Restart your computer afterward.
Reset Windows Update components
In an elevated Command Prompt, run:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
Restart Windows and check for updates. If Windows reports missing or corrupted files, see our guide to Windows Update Error Code 80073712.
Update your device drivers
Open Device Manager and check for devices with warning icons. Update those drivers through the manufacturer’s official support website, then restart your computer.
Download the update manually
Open Settings → Windows Update → Update history, note the KB number of the failed update, search for it on the Microsoft Update Catalog, download the package matching your Windows version and architecture, and install it directly. Restart once installation finishes.
Still Not Resolved?
Start by checking your internet connection and proxy settings, then run the Windows Update troubleshooter, SFC, and DISM. If necessary, reset the Windows Update components and try again. If the problem continues, identify the failed KB update and install it manually. Our experts are here to assist you — Chat with a specialist — for more technical support.
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FAQ
What does Windows Update Error Code 0x80240438 mean?
It generally indicates Windows is having trouble communicating with the update service — network, proxy, firewall, and Windows Update component problems can all contribute.
Can a proxy cause Error Code 0x80240438?
Yes. An incorrect proxy configuration can interfere with communication between Windows and the update service — checking the proxy settings helps identify the problem.
Should I run SFC and DISM?
Yes. If damaged system files or Windows components are contributing to the failure, SFC and DISM together help repair them.
Can I install the failed update manually?
Yes. If you know the failed update’s KB number, search for it in the Microsoft Update Catalog and install the matching package directly.
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