Windows 10 Update Error

Question

Hello I'm Getting A Error When Trying To Download And Install Updates . I'm Running Windows 10 And The Error Message Is 0x800f0805 I Would Really Appreciate Any Help !!!

Answer 1

Hi Joseph,

0x800f0805 denotes CBS corruption. A repair install should fix that.

• Download Windows 10 Media Creation Tool (MCT) from this link → https://go.microsoft.com/fwlink/?LinkId=2265055
• Run MCT and accept the license agreement.
• Click "Upgrade this PC now". This starts the repair installation.

Your apps, settings, and files will be kept by default during a repair install/in-place upgrade.

See also:

Reinstall Windows - Microsoft Support: https://support.microsoft.com/en-us/windows/reinstall-windows-d8369486-3e33-7d9c-dccc-859e2b022fc7

Answer 2

Hello, thank you for reaching out to Microsoft Q&A.

Please try the following methods -

1

Run the System File Checker Utility scan.

Open the Command Prompt as an administrator and run these commands one by one.

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /RestoreHealth

sfc /scannow

Restart your computer and install the updates.

2

Reset Windows Update Components.

Open the Command Prompt as an administrator and run these commands one by one.

net stop wuauserv
net stop cryptSvc
net stop bits
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
netsh winsock reset

Restart your computer and install the updates.

Let me know if you still need more help.

Answer 3

Error 0x800f0805 is a Windows Update installation failure. The context provided does not include specific causes or steps for this exact code, but it does include general and related Windows 10 update troubleshooting that can be applied.

Try these steps in order:

1. Run the Windows Update troubleshooter
   1. Select Start > Settings > Update & Security.
   2. Select Troubleshoot > Additional troubleshooters.
   3. Under Get up and running, select Windows Update > Run the troubleshooter.
   4. Apply any fixes it suggests and then try Windows Update again.
2. Check disk space
   • Make sure there is enough free space for updates:
     • At least 16 GB free for a 32‑bit OS.
     • At least 20 GB free for a 64‑bit OS.
   • If storage is low, free space or attach a USB drive and then retry the update.
3. Reset Windows Update components
   1. Press Win + R, type services.msc, and press Enter.
   2. Find Windows Update, right‑click and select Stop.
   3. Go to C:\Windows\SoftwareDistribution and delete all files and folders inside.
   4. Go back to Services, right‑click Windows Update, and select Start.
   5. Try Windows Update again.
4. Check for corrupted system files
   1. Open Command Prompt as Administrator.
   2. Run sfc /scannow and let it complete.
   3. Then run: DISM.exe /Online /Cleanup-image /Restorehealth
   4. After both complete, restart the PC and try Windows Update again.
5. General upgrade/install fixes for Windows 10
   • Remove nonessential external hardware (USB drives, printers, docks, etc.).
   • Uninstall any non‑Microsoft antivirus temporarily (Windows Defender will protect the device during the update). Reinstall it after the update.
   • Make sure all other Windows updates and drivers are installed before retrying.

If the error persists after these steps, note the exact update (KB number) that is failing and consider contacting Microsoft support with that detail and your logs.

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References:

• Troubleshoot problems updating Windows
• Get help with Windows upgrade and installation errors
• Windows Update common errors and mitigation