[Fixed] Windows 10 Upgrade Stuck at 99%, 32%, 0%

Jean updated on Dec 10, 2018 to Partition Manager | How-to Articles

Windows 10 Upgrade Stuck at Various Percent Completing Mostly 99%, 32%...0%

Superuser forum - "Installed Windows 7 Ultimate (64-bit) on a fresh PC and after installing service pack 1 started the upgrade to Windows 10. Windows 10 Upgrade Assistant app downloads and verifies but gets stuck at 99% in the upgrading window phase. Even after hours, it remains stuck there."

Microsoft community - "Today I've obtained and updated my windows 8.1 PC to Windows 10. The installation is finished well and windows 10 is started up good, then I decided to reset it for a clear installation deleting all file on HDD but now the reset status is stuck at 99% for a past hour is this normal?"

Reddit comment - "I've found multiple people with this issue but with no clear answer. The only thing I found was to leave it running. However, mine has been running for around 24hrs and hasn't budged past 99%. I have tried resetting it and the same thing happens. Any advice would be very helpful!"

These requests for replies of fixing Windows 10 upgrade stuck at 99%, and Windows 10 reset stuck at 99% still do not end. Here below are two major cases that most users would have to face while upgrading to Windows 10:

We've heard many people encountering Windows 10 upgrade stuck at various percentage issues on Windows 10 forums, such as Windows 10 upgrade stuck at 76%, 75%, 43%, 32%...2%, 1% and even at 0%. What's more, upgrade assistant stuck at downloading, installing, checking for updates... If you happen to be one of the victims, how do you get around Windows 10 upgrade slow, stuck, freeze, not proceeding and freezing issue? 

Solution 1. Do Nothing but Wait

As a reminder, Microsoft recommends users wait until the upgrade completes before taking further action. A delay of one day would be highly unusual, but it suggests that users wait that long for the upgrade complete or to confirm there is an issue. Just be patient and wait for 100% complete if there's no error has reported.

Solution 2. Clean Up Extremely Large Files and Junk Files and Do Upgrade Later

Cannot wait longer? You may need to do some cleaning now. Windows 10 reset would remove all files and folders and wipe the drive clean, and this process takes incredibly long if the drive's "heavy" enough. Do not let Microsoft accomplish the cleaning, which is time-consuming. Just put the ongoing upgrading to a halt, and use EaseUS partition magic software to wipe hard drive clean.

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Solution 3. Disconnect Any Peripherals

Make sure you've disconnected any non-essential hardware and unplug all hard drives other than the C: drive. Yank that external hard drive, disconnect peripherals that aren't necessary, including extra monitors, smart card readers, weird keyboards, whatever. If possible, consider turning off Wi-Fi and plugging into a router with a LAN cable (that worked for me). Then try running the upgrade again.

Solution 4. Use "Try Again" Option in Upgrade Assistant App

Wait for the Upgrade Assistant to report "Something went wrong," and use the "Try Again" option. This should repeat the usual download, verify and install cycle.

Solution 5. Upgrade to Windows 10 Using Media Creation Tool

Use Windows 10 creation media tool to create a USB or DVD drive. You can upgrade to Windows 10 using the tool or perform a clean installation using a USB or DVD with no hassle. Make sure you followed the guidelines strictly and never miss the important steps.

Solution 6. Take Your PC to a Microsoft Store Nearby

If none of the solutions work for you, bring your PC to Microsoft Store and let the engineer do the upgrade. This should be the most convenient and effective way to solve your Windows 10 upgrade slow, seemingly stuck at 99% process issue.


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