Windows 10: Anniversary Update stuck at 99%

And this helps with the problem exactly how? Other people may have different experiences. I've updated dozens of computers with various operating systems and if there were problems it were invariably the windows machines. Some stuff has to be more reliable than other stuff. You cannot have the breaks of your car working 99% of the time, or the fire fighters putting out the fire 99% of the time. I paid good money for a working operating system and I need it to work always, not sometimes. Anyway, there's always linux.

 

I had the same problem on my Windows 7 laptop. Got stuck at 99%. It had to download and install some W7 updates first. After installation everything went smooth, and no further problems*Smile

 

Somewhere in the posts at this link in Ten Forums I reported my success on fixing: Repair Install Windows 10 with an In-place Upgrade - Windows 10 Forums

I think it was running the Windows Update Repair Tool, which added a Windows 10 version midway and finished showing a bunch of errors and solved ..but just came back and solved on running again. I think I had to take control of Catroot2 and run these Repair Commands in CMD as Admin.. anyway... Windows Update in Win 10 finally got it installed and acted like a Repair/Reinstall in some ways... SFC /SCANNOW says no errors which has been a bug with me for months and DISM commands did not work, even pointing to a SOURCE of Fresh .iso DL. But, I still have "Service registration is missing or corrupt Not fixed" in WINDOWS UPDATE TOOL. SO ?? Not a Real Fix on this bug.

 

I'm glad it worked for you. I cannot go back to windows 7, unfortunately. Also, I noticed that yet another laptop now shows the same problem. It's a crappy OS.

 

I always Trust Microsoft Updates all the way. There are bugs here and there with many Systems which have wildly different setups. I have found that it always pays off to just Keep up with MS. It is very self correcting in the end. Beautiful ....I always go for the latest. A little Googling on bugs usually will find a Fix on this on that.

 

wow thats a lot of time
might want to try other solutions here
http://alfred.co.in/how-to/windows-1...ercentage-fix/

 

This might work for someone out there even if I'm late. Windows update tool got stuck at 99% on my computer. All I did was restart, then go to C: and enable viewing of hidden folders. Then I was able to see the folder where the update was downloaded to, in that folder you'll find the full set up and just run it manually. It worked for me and I was up and running in 30 minutes

 

My install downloaded all of the files from the internet just fine, then it rebooted and started the actual upgrade. Got to 91% and the installation just hung for 10 hours.

I phoned microsoft, they told me to power down the PC and reboot.

PC Message on reboot - REVERTING TO PREVIOUS VERSION OF WINDOWS ----

What now?

 

I have also had problems with this latest Win 10 update.

I have been stuck on this message below for over 24 hours now. See attached screen capture below.

 

As for the latest Cumulative Update (KB3189866), I had the same problem on one of the 8 machines I work on at home. I downloaded the manual installer from the MS Download Catalog instead, and that worked fine. Find it here: Search results for "KB3189866" Grab the x64 or x86 (32-bit) version as your current install dictates [Note the 32-bit version is not labeled as such, it's the third entry in the list with a size of 255.4 MB.]. Hopefully, this will work for you as it did for me.
HTH,
--Ed--

 

Tried a number of fixes before I came across this link that was easy and worked for me. Fix Windows 10 Anniversary Update Stuck at 99% - YouTube

 

Here, lets actually make this issue "Solved"
It seems as though this issue can be experienced when you are upgrading from Windows 7 to Windows 10 Anniversary Edition. (Previous Windows 10 editions did not seem to experience this problem) And it can also happen when you are already on Windows 10, and updating to Anniversary Edition. (My build is 10240)

Lets just say, before upgrading to the Anniversary Edition, disable and stop the Windows Update service
(start>run>services.msc and look for Windows Update)

Windows 7 users, if your upgrade is sitting at 99% or it was moving along steadily and all of a sudden has hit the brakes (this is what mine did when it reached 82% and started to crawl) you can perform this fix and the upgrade will complete.

Windows 10 users, maybe you will have different luck. But for myself I could not get the Windows Update service to stop successfully. (Received a timeout error) but a restart and disable/stop of Windows Update service before running the upgrade went with out a hitch.

Good luck