Windows 10 Cumulative Update For Version 21H1 x64 Based Systems - Little Bit Good!

Tell time of total installation.
Stuck was 100 % is my laptop

Thanks brother, it worked!! I watched many video but only this worked!!

Installation is paused at 20 percentage

Cumulative Update for Windows 10 Version 21H1 for x64-based Systems (KB5005565) this is my problem I always restart it but still it doesn't install.

How much time to take for restarting

after 100 percent the update is stuck and not installing and also the internet data consumes very fast although 100 percent completed. After 100 percent i wait for about 30 minute but not install.

Tried 5 times, after installing 95%, it says "We are unable to install update, we are undoing changes"