Windows 10 Feature Update 2004 taking too long to install

Yesterday I tried to install it 3rd time and it failed again and rolled back. The only difference among this and first two attempts is that, in first two attempts, I was asked to install the updates. Whereas in third attempt I was not asked so I used Windows 10 Upgrade Assistant.

In all attempts, after my laptop was restarted for updates finalizing, it did not cross 20% for four hours and then rolled back, saying undoing changes.

What will be the solution for this?

Today I was notified by Windows Update that the 2004 update is finally ready to be downloaded and installed on my laptop. I pressed download and install and left the laptop plugged in idle as I did not have any laptop work to do at that time. Now it's been 4 hours since I left it on, and the Windows Update screen (in the Settings > Updates & Security) is still at 94% installing, which is the exact number I saw more than an hour ago. Is it stuck? Why is it taking so long to install? My internet is fast enough, I don't have many programs installed apart from a few essentials such as Office and Inkscape along with other credible software. I am afraid that if I close it and reset the Windows Update, it'll take 4+ hours again (not to mention the additional lengthy rebooting and installing the update again in the blue background screen which happens with every single update), plus it's already night here so I cannot leave it turned on while I go to sleep.

Hello, I must make it clear that I am not very techy, but.

I too received advice that Windows update (2004, was ready to install, I set the download and installation in motion. I too panicked as my screen went blank for long periods, but in the end, it all installed ok, having taken six hours.

Regards

Hi guys. I only begun installing this update at 19:30 last night. My latest report so far is that it's stuck on 84% install in Windows Update after hitting 7am in the morning. That makes the install time of this update come up to nearly 12 hours so far. I don't know why it is taking such a long time for it to be installed on my system.

I have a huge amount of hard drive space available for it, around 840 GB, to be installed on my 6 year old Toshiba Satellite laptop. The waiting time for this update to be downloaded & updated on my laptop is very excessive. There must be some very large installation files in it that were given the go-ahead from MS behind our backs beforehand while it was given to all of us who wanted to try it out for the 1st time. It's simply ridiculous for it to continue in this way. Tell us Microsoft; what have you done to yourselves?

The 2004 update is an incompetent, ridiculous (and suspicious) mess.  **** is MS doing with this update?  It takes longer to install this update than it did to install 10 in the first place.  I was ultimately successful installing the "update" on 8 machines after accessing the "Windows 10 Update Assistant," but it still took TWELVE HOURS EACH, with many disturbing stalls and pauses.  Either high-school kids are writing code for Microsoft, or something very nefarious is going on here.  What did they put into all my machines in the guise of "an update?"

Hey now, I still have you beat. I got home last Friday night (Eastern Standard Time) and kicked off the "update" on my laptop and proceeded to make dinner. Before I could blink, it was Monday AM and I was heading back to work...checked the status and found the update to be chillin' at 84%. At this rate, I'll get it updated by the time Windows 13 comes out.