Solved failure of upgrading from windows 8 to .8.1

Hello,
I've tried to upgrade from windows 8 to windows 8.1, but it didn't work. all the steps of downloading and installing through Windows store went well, until the computer restarted and was configuring things then a blue screen appeared showing that the computer ran into a problem, then the procedure to go back to windows 8 started.
I'm now working with windows 8. my computer came with windows 8.

NourinE said:

Hello,
I've tried to upgrade from windows 8 to windows 8.1, but it didn't work. all the steps of downloading and installing through Windows store went well, until the computer restarted and was configuring things then a blue screen appeared showing that the computer ran into a problem, then the procedure to go back to windows 8 started.
I'm now working with windows 8. my computer came with windows 8.

Click to expand...

Make sure you have all the latest updates for W8....Before trying to install W8.1 from the store.

I've run a check for Windows Update earlier today, and have found that I should install only one update (KB2993651)
I don't usually read about the updates, but I accidently googled about it and found it is released to fix a patch or such like (I can't understand that well), but some users says that it causes them reboot or startup issues (like BSOD and that what happened to me when I tried to install Windows 8.1), fortunately for me it doesn't.
what is more, Microsoft strongly recommends removing a previous update which is KB2982791 right after installing KB2993651, for me I installed the latest without removing that KB2982791 without any issues.

shall I just run a check to make sure that there are no more updates left? or I should wait for specific ones?

No need to recheck windows updates.
Disconnect all external devices from the computer.
Temporarily disable your Avast Internet Security
Now try the to update to 8.1

ok, thanks a lot, I'll do

the same problem (0xC1900101 - 0x40017)

Additional troubleshooting steps here:
[RESOLVED] Couldn't update to Windows 8.1 - 0xC1900101 - 0x40017

Before reboot to do the upgrade make sure you do a clean boot

How to perform a clean boot in Windows

I've performed clean boot and disabled my antivirus temporarily and all the startup programs. it's now applying changes. let's see...

it didn't work, but I have a question about clean boot. when I applied the clean boot restarted the computer before the upgrade I found that everything goes back its place I mean like I didn't apply the clean boot, is that normal?

Hi, you have to completely uninstall the Avast software before doing the upgrade. See "Couldn't update to Windows 8.1 - 0xC1900101 - 0x40017" - Microsoft Community

Good luck, werty

shall I also uninstall Malwarebytes Anti-malware Premium? I have it

or I should only disable it temporarily?

When I upgraded to 8.1 Pro I was using a Microsoft account, not a local account.
The transition went smoothly.
Just a thought.

many thanks to you all, especially "werty" you solved my problem.
just one thing how can I remove the shortcut arrow? I removed it but now after the upgrade it's back.

I am glad that I helped you and thanks for the rep! Can you be more precise - what shortcut arrow?
Tip: you can post a screenshot.

I mean the shortcut arrow on the icons of the desktop

All icons on the desktop have shortcut arrow except Computer, Control panel and Recycle bin.

yes, exactly