Windows 10: "We couldn't install this optional quality update"

Just today, Windows Update showed "Optional quality update available".
But after pressing "Update" button, and some delay, the error message appeared:
We couldn't install this update but you can try again (0x80070541)
2021-03 Cumulative Update for W10 Version 20H2 (KB5001649)
If I press Download and install - then the failing cycle just repeats.
Do I just wait and re-try? Anybody else getting this, or similar past failures? Reason?
Thank you!

EditionWindows 10 Pro
Version20H2
OS build19042.868

:)

 

Update KB4550961 couldn´t be installed

Hi! I´ve tried hard to install KB 4550961 unsuccessfully. Even run this or that in order to correct whatever the problem might be.

However, after restart it appears “Updates couldn’t be installed” on the screen. Running Scannow and Restorehealth as Administrator didn´t
work either.

I´ve also gone step by step thru “Fix Windows Update errors” steps 1 to 5. I´m reluctant to follow Step 6 Reset or Reinstall Windows –
Refresh is not included - because I´m afraid I might loss some stuff important, though I created a restoration point and a USB recovery drive, just in case.

 

Couldn´t install SBSH Explore Pro- installation failed after download

I couldn´t install "SBSH FExplorer Pro" from Nokia Store (cost 4,99 EUR).

Installation failed after download.

Allow all software for installation is active, Online certificate check: On,

download and install is on C:, Space on C: is over 200 MB available.



E72-1, Typ RM-530

software version 053.001, special version 053.001.231.03

Updates for this firmware version available: None.



Freeware of SBSH Explore works perfect- Pro Version installation failed.

After download I couldn´t find installation data (zip or .sisx) on C to with freeware version..



Somebody for help or any ideas?



Support speeches: German and English.



Thank you!





Support of SBSH was contacted.

 

"We couldn`t create a new partition or locate an existing one."

Try this:

Before you get to that message, press SHIFT + F10 to open a command prompt.

Run diskpart.
At the diskpart prompt, run these commands:

list disk

At this point you should see the SSD as disk 0. If it has another disk number, use that number rather than "0" in the next command.

select disk 0
clean
exit (to exit from diskpart)
exit (to exit from the command prompt)





That should clear the contents of the disk. The entire disk space should then show up in Windows setup as "Unallocated Space" as in the screenshot below.