3 person had a looked at someone tablet failed to resolved Windows 10 issue? Not very impressed.
Tablet owner must be think that you and other 2 persons are absolutely rubbish at fix Windows 10 issues. The 4th person would resolved Windows 10 issue on someone tablet, that would be me if I had a look at someone tablet!
What is someone tablet brand and model, CPU, RAM and SSD?
When you had a looked at the tablet. Did you ever tried stopped Windows Update service and deleted C:\WINDOWS\SOFTWAREDISTRIBUTION?
I never had Windows 10 update stuck at 0% on my 9 years old Linux 10 tablet and 7 years old Meegopad T01 with Intel Z3735F, 2GB RAM and 32GB SSD both usable are incredible still going strong with 32 bit Windows 10 21H2. It a shame both device had 32 bit UEFI that was impossible to update to 64 bit UEFI so I cant installed 64 bit Windows 11 on it, 32 bit Windows 11 did not existed and also 64 bit UEFI for both devices was not existed. I had a look on ebay found both device are worth £50 each, I will think of sell both devices in a few months.
I not used both devices much as I used my Surface Pro 6 tablet a lot, only used both devices once every 4 or 5 months to installed Windows 10 updates, it was very quickly and simple, Windows Update tasks never been busy in background, no need a lot of messing about in future to keep on top of security updates.