Please run the KVRT online scanner.
https://www.kaspersky.co.in/downloads/free-virus-removal-tool
Configure KVRT as in the image below and run a scan. Post the detection report here.
Error downloading windows update
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(224.00000000000003, 12%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EQH%3C/text%3E%3C/svg%3E)
Quang Huy
0
Reputation points
It's been 3 years since my last sucessful update and now I've got windows 11 25h2 through windows update but cannot downloading it because 0x800f0805. Running dism and sfc scannow not work.
Windows for home | Windows 10 | Windows update
3 answers
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Ramesh 176.5K Reputation points Volunteer Moderator2025-11-17T05:28:52.6366667+00:00 -
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Ramesh 176.5K Reputation points Volunteer Moderator
2025-11-20T03:43:17.73+00:00 Please run ComponentsScanner.exe from Sysnative.com. (Source link.)
After it finishes running, upload ComponentsScanner.txt.
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Ramesh 176.5K Reputation points Volunteer Moderator
2025-12-01T03:02:19.7433333+00:00 I'd suggest repairing your Windows 10 installation so that it's fully updated.
- 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
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Quang Huy 0 Reputation points
2025-12-01T03:34:44.2666667+00:00 I've tried Windows 10 and Windows 11 mct before but it always give the the line:"The installation failed in the safe_os phase with an error during replicate_oc operation".
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Ramesh 176.5K Reputation points Volunteer Moderator
2025-12-01T03:38:18.47+00:00 Please download CBSDiag.bat
https://gist.github.com/winhelponline/819c9abe3003b50f0c4893ddbb1c84ae
Right-click the file and choose run as administrator.
Share the zip file and post the link here.
Sign in to comment -
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Ramesh 176.5K Reputation points Volunteer Moderator
2025-11-13T03:30:20.6733333+00:00 Please share your Farbar scan logs for analysis.
- Download Farbar Recovery Scan Tool 64-bit FRST64.exe
- If the OS language is not English, rename
FRST64.exetoFRST64English.exe. - Run the program. Don't check or uncheck any options. Click "Scan".
- Add the two logs, FRST.txt and Addition.txt, to a zip archive.
- Share the zip file on OneDrive or GoFile.io, and post the link here.
Note: If Microsoft Edge or Chrome mislabels the Farbar Scanner executable as PUA/malware, choose to keep it by tapping … in the bottom bar, choosing Keep, and then choosing Keep anyway in the dialog that appears. See this screenshot. It's a safe tool used in most antimalware forums.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(86.4, 71%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERS%3C/text%3E%3C/svg%3E)
Ramesh Srinivasan 81,805 Reputation points Independent Advisor2025-10-23T04:12:05.87+00:00 Hi Quang,
Please run
winver.exeand post a screenshot. The dialog shows your current OS version and the build number.Run msinfo32.exe, and click System Summary. Resize the columns in the right pane to make the entries visible, and post a screenshot.
