How to fix error 0x80070646 when updating Office in Windows 10?

Who I am
Philippe Gloaguen
@philippegloaguen
Author and references

Windows has one of the best operating systems out there, because it's packed with impressive features (like the one that lets you turn on HDR video playback), but this does not save you from making very serious failures, and only for one of them is today's tutorial, so you can learn how to fix error 0x80070646 when updating Office.

This error is one of the most common and at the same time annoying, since due to it it is not possible update Office suite programs, which are vital in every way. If this happens to you, then you must be very frustrated, but don't worry that your problems are over today.



It should be noted that this tutorial is only for fixing the specified bug, so here you won't see how to fix the Office product activation error or how to fix a specific bug in a program.

How to fix error 0x80070646 when updating Office?

Now, so that you can fix error 0x80070646 while updating Office, the first thing you need to know is that there there are several solutions that can be applied, but here we will show you two of the best so that you can finally update your Office.

Before starting, it should be noted that it would not be a bad thing for you to update your Windows to the latest version or, failing that, activate the license on its official website, because the solutions are best applied in a completely legal and operating system original.

If your system is already up and running, the number one solution you can apply to fix this bug is use the Windows troubleshooter. For this you have to go to "Start" and from there to "Settings".



Being in that section you have to press the option called “Update and security”, and finally select “Troubleshoot”, which will run the program making sure that it performs an analysis of all the files and folders on the PC.

After detecting your error , the solver will point it out to you and fix it automatically by itself (this process may take some time), when it finally ends, everything should be fixed, so your failure is a thing of the past.

Another solution to this annoying problem!

With the above you should already be able to fix error 0x80070646 when updating Office, so now you will be shown another method that you can use in the remote case that the above does not solve your problem.

To get started with this other solution, what you should do is go to start and into the search bar "Regedit" position, to which the option of the same name appears, click on it.

With this action, you will see a window with different system folders, choose the one named HKEY_USERS (you shouldn't press the folder but the little arrow next to it), then more folders will appear, enter the one that says “Default”.


Within this, select the "Software" section, then "Microsoft", then "Windows", then "Current version" and finally press “Explorer” and “Shell Folder”.

Now that you have done that, a series of options will appear on the right side of the screen, there you have to find the “Appdata” option and right click on it, then click on “Edit”.

This will bring up a window in which the value of said option will be, which you have to completely replace it and put %USEPROFILE% Appdata Roaming instead, then save the changes with sending.


And voila, with that the error should be fixed, so now you just need to go and try these solutions. Remember not to stop there and look for more information on errors, such as: how to fix error code 651.

add a comment of How to fix error 0x80070646 when updating Office in Windows 10?
Comment sent successfully! We will review it in the next few hours.