Windows 11 not updating to Windows 11 Insider Preview Feature Update (26220.7051)

Update:

The problem was solved for this build, and I proceeded smoothly to eventually install Windows 11, version 25H2, except that the next update is now frozen by showing an installation error:

Preview Update (KB5067036) (26200.7019)
Install error - 0x800f0991

1. Have run System checks. Nothing worked.

2. Ran several scans and troubleshooters. Nothing worked.

3. Tried to install the build update manually. Nothing worked.

Again, I may have tried every method possible, but nothing has worked.

I would request someone to look into this matter, because even though the update may run smoothmly after a few days later, it is not of any good that every next update must show an error and update only after a few days henceforth.

Thanks!