Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Error 0x8007007E during Windows 10 Update

18 Dec 2017   #1

Windows 7 Professional 64-Bit
Error 0x8007007E during Windows 10 Update

Hello All,
I have a computer running Windows 7 Pro that I'm trying to update to Windows 10 using the "Windows 10 Update Assistant". This laptop has a new clean install of Windows 7 Pro.

The upgrade downloads, but when it starts to install I get the following pop-up with this error:
title: "Windows10UpgraderApp.exe - System Error"
message: "The program can't start because api-ms-win-core-libraryloader-l1-1-1.dll is missing from your computer. Try reinstalling the program to fix this problem"

When I click OK, it goes back to the Windows 10 Upgrade Assistance and has an error "You can contact Microsoft support for help with this error. Here is the error code 0x8007007e."

I ran SFC Scan, it found no issues.
There isn't an anti-virus program on it.
I've tried everything I could possibly find from Googling both errors and going through the steps everyone says to do..

Any ideas?

Attached Thumbnails
Error 0x8007007E during Windows 10 Update-error1.jpg   Error 0x8007007E during Windows 10 Update-error-2.jpg  
My System SpecsSystem Spec
19 Dec 2017   #2


I joined so I could tell you. It's funny you joined just to ask. :)

Someone brought this problem up on 4chan briefly, but then it got deleted. Figures.

I found a solution!!

It's Microsoft's fault. Try to find a system you previously updated to 10. The key is, sometime between yesterday and today they updated something. I know, because I upgraded a few computers yesterday no problem. Today, all machines fail. The Windows10Upgrader folder on the successfully upgraded system will have working files.

Copy the Windows10Upgrader folder from the root directory of the working machine to a flash drive.

Open the Windows10Upgrader24074.exe (since that's the verison that seems messed up). Let it check for updates, and move on to the agreement page. I accepted the agreement, let it check my system for requirements, and did not click next. It will auto proceed in 10 seconds so do the next step quick.

Copy the working Windows10Upgrader folder you have on your flash drive, onto the target machine overwriting the Windows10Upgrader folder on it. Confirm all overwrites and skip the few in use files. If you do it fast enough, it will overwrite the messed up files and allow the install to work.

Tada! Hacking at its finest lol.

If any Microsoft engineer is going to fix this and uses my info, also know, the problem may relate to GetCurrentRollback.exe since launching that individually causes the error to be thrown. Test your code before release!
My System SpecsSystem Spec
19 Dec 2017   #3

Windows 7

Would you mind zipping that up and uploading it somewhere? Having the same problem here but unfortunately don't have another machine with these files on it. :/
My System SpecsSystem Spec

19 Dec 2017   #4


Sure, here you go!

[Direct links are not allowed, especially to unknown not HTTPs site - Removed]
My System SpecsSystem Spec
19 Dec 2017   #5
Joshua Oukami

Windows 10 Pro 64 Bit
I just joined, to say, I love you

He joined to post, you joined to answer and I just joined to say thank you... after 3 hours of troubleshooting and the very real possibility of a failed project your solution seems born of an evil genius.

I put the folder on a USB stick, then I wrote a one line batch file that says;
XCOPY .\Windows10Upgrade C:\Windows10Upgrade\ /e /y /h /r /c

So the upgrade process is;
  • Insert USB Stick
  • Open an elevated command prompt and browse to USB... usually D: but sometimes E: etc
  • Run Upgrade Wizard
  • When you get to the 10 Second countdown, run the batch file
The batch file simply speeds up the process of overwriting the folder, removing all the acknowledgements that you need to make if you do it in GUI.

I now have a repeatable process... again... thank you!
My System SpecsSystem Spec
19 Dec 2017   #6

Windows 7


Oddly enough, I found an old version of Windows10Upgrade24074 on a USB drive that also worked (I just pulled network cable for it's first run so it wouldn't update itself).

The version that worked is 6,307kB compared to the broken version which is 6,097kB. You'd think they'd at least increment the version number if they're going to change it...
My System SpecsSystem Spec
19 Dec 2017   #7

Windows 7 Pro

Can you send your old version of Windows10Upgrade24074 to me Please!!!. I don't have any upgraded windows 7 machine. I didn't find old version of this file.

My System SpecsSystem Spec
19 Dec 2017   #8

Windows 7 Ultimate x64
Upload files

Hi, I also joined just to try to fix this :)

The day before yesterday I upgraded succesfully, but today there is no luck.

I have deleted the updatefiles, so I really need them.
My System SpecsSystem Spec
19 Dec 2017   #9

Windows 10 Enterprise

Hi. I am able to get past the message now, but then i get a new error message: 0x80070002 i upgraded a lot of computers yesterday. Hope microsoft releases an update soon.
My System SpecsSystem Spec
19 Dec 2017   #10

Windows 10 Enterprise

Fixed it. if you get 0x80070002, do the following:

- Delete all files in C:\Windows10Upgrade
- Copy all files from old Windows 10 upgrade folder to C:\Windows10Upgrade
- Disconnect from the network
- Start the upgrade tool from C:\Windows10Upgrade
- Agree on the terms
- When the download starts, reconnect to your network.
My System SpecsSystem Spec

 Error 0x8007007E during Windows 10 Update

Thread Tools

Similar help and support threads
Thread Forum
Windows 7 - Update KB976932 and KB982526 update failure- error 800b100
Hey, I'm trying to install update KB976932 (Windows Service pack 1 for 64bit) and KB982526 (Microsoft .NET Framework 3.5 SP1) but I keep getting error 800b100 which stops me from doing so. I've tried deactivating my firewall; manually installing from the microsoft website; and using the...
Windows Updates & Activation
Windows update error code 2 on installing security update .NETF 4.52
Hi everybody I get windows update error code 2 on installing Security Update for Microsoft .NET Framework 4.5, 4.5.1 and 4.5.2 on Windows 7, Vista, Server 2008, Server 2008 R2 x64 (KB2978128) I have also some other errors installing Internet Explorer 11. I have used "sfc /scannow" command...
Windows Updates & Activation
Windows Update Error 80070002 & Windows Update Diag Error 0x8007370B
ASUS Desktop PC CM6850 Series Windows 7 Home Premium SP1 64-bit Core i7 4GB RAM 500GB HDD Windows updates not working for a while. Initial was 8007370B appearing in the Windows Update window when searching for updates. Found bad memory using Memtest86+ and pulled the stick. Other stick...
Windows Updates & Activation
error 0x8007007e when attempting to open programs or pictures larger
its a windows 7 x64 computer, now the programs im using are basic programs that have worked for me for close to 2 years, recently when i try to view a picture larger or open programs(any program at all) i get this error 0x8007007e says there was an error and the program could not be opened showing...
Performance & Maintenance
Microsoft update : 0x8007007E on Windows 7
Hi everyone! I have an 0x8007007E error while trying to use Microsoft Update on IE8. However, Windows update (the one built in windows) works but it only gives me updates for windows. Many thanks!
Performance & Maintenance

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:39.
Twitter Facebook Google+