Step1 :- Run the Windows Update troubleshooter
Step2 :- Click on next
Wait till the process completed
Method 2
Step3 :- if problem didnt solve the follow other steps
Restart your device and check for updates.
Step4 :-
Step5 :-
Method 3
Windows Update Troubleshooter
https://aka.ms/wudiag - download here, run this, and see if that can detect and fix your problem. I know you said you tried this, but not sure if you used this diag tool, worth a shot.
If no luck, we'll run a couple of scans to try to repair corrupt sys files.
Click start, type “cmd” - right click and run as admin - then copy and paste this:
DISM.exe /Online /Cleanup-image /Restorehealth
Hit enter, and wait for that to finish, and move onto the next command. Type(or copy and paste):
sfc /scannow
Hit enter, and after this finishes, reboot, and try windows updates again.
If no dice with all these methods, I’d entertain a windows reset.
Start > Settings
Click on Update & Security > Recovery
Once in that tab, click on “Get Started” under Reset this PC.
This should take a moment, and you’ll be prompted to “Keep my files” or “Remove everything” - The process will start once one is chosen, your pc will reboot and a clean install of windows will start.
I’d back up your files, and take note of your apps, but this would be a solid way to get windows on a clean slate and have updates working properly again.
Method 4
Let’s try to manually purge the update cache.
click start and type cmd, right click and run as admin. Type:
“net stop wuauserv” and press Enter.
Click start, type control panel - file explorer options - click the view tab, and make sure “show hidden files...” is buttoned off.
Once done, navigate to C:\Windows\SoftwareDistribution\Download and delete the content of the Download folder.
Click start again, type cmd, right click and run as admin, type:
“net start wuauser” and hit enter.
Reboot, and try to check for updates again.
Method 5
So it’s not even checking for updates... last checked on the 22nd... something happened.
Click start - type “services.msc” and open it - go to the Windows Update service, and right click and go to properties. Is it running? If not, try to start it. If it starts, try to go back to Win Updates and run them.
If no dice, I think we should entertain a system restore to before the 22nd.
Click on Start - and type "control panel" and click on it
Once open, search "recovery" and hit enter. When it comes up, click on recovery.
On the next page, open "open system restore"
They'll be a box that says "click for more restore points" that I would click. Choose a restore point (before this happened), and follow the prompts.
** Please note, all your files and photos, etc will be fine. Any applications (ex. candy crush) you've installed since the point you're going back to will be removed. Just a heads up **