Windows 10 1909 won't Update

[Rick68005]

I have four HP Slimline Desktop PC 270-a0xx that will not upgrade past Windows 10 1909. I've research and followed every recommendation I can find on-line, every other update is current, all drivers are updated, BIOS is current, deleted Bluetooth drivers, etc. Does anyone know why these HP desktops won't upgrade past 1909? 

[itsmyname]

Two suggestions:

1. Within the "Settings" window, do a search for "trouble", to find the trouble-shooter for Windows Update problems. Run it. Retry Windows Update.
2. Via: Download Windows 10 (microsoft.com)  download the current (21H1) version, and let it write to an empty (or soon-to-be!) 8 GB (or larger) USB memory-stick. Then, find the "setup.exe" in the root-folder of its file-system, and run it, to see if it works, or if it generates an error-message. If it works, run Windows Update, to get the July 2021 updates.

Good luck!

[Rick68005]

Thank you for your suggestions but none of that helps. I've purchased programs to update all my drivers and delete drivers not required, updated BIOS, HP Software, and Microsoft (except 1909). I've deleted my Bluetooth drivers as suggested in one post, disabled my AV program while attempting to update Windows, and checked to make sure I didn't have two strips of RAM (as suggested by another). I reset one of the computers and attempted to load Windows 10 21H1 from a USB drive, nothing works, they always revert to Windows 10 1909. If there's something I'm missing please let me know.

[itsmyname]

The only thing that you have not tried is:

1. create a backup of all your perfonal files (Download & documents & Music & Pictures & bookmarks)

2. take an inventory of installed "non-free" programs,e.g., "Adobe Acrobat", "Microsoft Office", et cetera, and get the prouct-keys

3. take an inventory of all "free" programs (audacity, Adobe Reader, iTunes) 

4. use that downloaded copy of Windows 10 to do a "clean" install -- delete all the existing partitions

5. access the HP Support web-site to clean all the HP-specific device-driver updates

6. Run HP Support Assistant

7. Run Windows Update

8. re-download & install the free programs

9. re-install the "non-free" programs

You might want to do all of the above steps on a brand-new disk-drive, not on your "production" disk-drive.

If something goes wrong, reconnect the "production" disk-drive.

6.