This error may appear anytime a Windows Update fails. To investigate possible solutions, we need to start with the specific error code. We can do this by viewing your update history. Swipe in from the right edge of the screen (or, if you're using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), and tap or click Settings . Tap or click Change PC settings , and then Update and recovery . Tap or click View your update history . View failed update error code. Please post here with your error code, so that the Community can try to help guide you appropriately.

The error code I get is 80246007.

Robert, that's an issue in itself too. Windows update is set to automatically downloading and installing KB2919355. I am pretty sure that files were downloaded each time. So actually over this period, the auto-update had tried installing this many times. (Other updates were okay). I asked the same question earlier, and downloaded KB2919355 manually install it too. At the end of the installation (after a good 10+mins), it said failed too..... let me know any options that I should try...

By comparing the Update History and the updates needing to be applied, I've found that they are the same. Update History indicates all were successfully installed. Therefore repeating the process results in an error. It appears that the auto updater doesn't get the message that they are installed. Maybe that's the problem and is fixable.

I took a look at my partitions and as my laptop originally had just a 120gig SSD, the system reserved partition was less than 2 gigs. On the hunch that this might be causing the problem, I used the recommended Minitool partition wizard to extend the system reserved partition to about 25 gigs. I ran KB2919355 again, but the result was exactly the same. It seemed to install just fine within Windows and then failed after a series of reboots with the same "We couldn't complete the updates. Undoing Changes" message. It does not look like the reserve partition size made any difference, my problem is the same as before and this update will not install.

Robert, I have the original Windows 8 OEM disk that I bought when I built the machine. Sounds like you could at least create another partition, install W8, update it and then use that as /source: maybe even with /LimitAccess. But what I was wondering is what if you just make a semi-right guess about /source: without /LimitAccess does that make WU do anything different? I hate to say this, but I really don't know what any of that means. Sorry but you would need to provide step by step instructions. Just got off the phone again with Microsoft technical support. No help at all. Once she tried all the same things we have been trying, she again said I need to buy Windows 8.1 and do an in place upgrade. This sucks.

Error: We couldn’t complete the updates, Undoing changes. Don’t turn off your computer.

Anonymous

This error may appear anytime a Windows Update fails. To investigate possible solutions, we need to start with the specific error code.

We can do this by viewing your update history.

Swipe in from the right edge of the screen (or, if you're using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), and tap or click Settings.
Tap or click Change PC settings, and then Update and recovery.
Tap or click View your update history.

View failed update error code.

Please post here with your error code, so that the Community can try to help guide you appropriately.

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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998 answers

Anonymous

2014-05-17T01:53:33+00:00

The error code I get is 80246007.
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Anonymous

2014-05-17T01:30:11+00:00

Robert, that's an issue in itself too. Windows update is set to automatically downloading and installing KB2919355. I am pretty sure that files were downloaded each time. So actually over this period, the auto-update had tried installing this many times. (Other updates were okay). I asked the same question earlier, and downloaded KB2919355 manually install it too. At the end of the installation (after a good 10+mins), it said failed too..... let me know any options that I should try...
Was this answer helpful?

2 people found this answer helpful.

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Anonymous

2014-05-17T00:03:12+00:00

By comparing the Update History and the updates needing to be applied, I've found that they are the same. Update History indicates all were successfully installed.

Therefore repeating the process results in an error.

It appears that the auto updater doesn't get the message that they are installed. Maybe that's the problem and is fixable.
Was this answer helpful?

2 people found this answer helpful.

0 comments No comments
Anonymous

2014-05-16T23:36:50+00:00

I took a look at my partitions and as my laptop originally had just a 120gig SSD, the system reserved partition was less than 2 gigs. On the hunch that this might be causing the problem, I used the recommended Minitool partition wizard to extend the system reserved partition to about 25 gigs. I ran KB2919355 again, but the result was exactly the same. It seemed to install just fine within Windows and then failed after a series of reboots with the same "We couldn't complete the updates. Undoing Changes" message.

It does not look like the reserve partition size made any difference, my problem is the same as before and this update will not install.
Was this answer helpful?

2 people found this answer helpful.

0 comments No comments
Anonymous

2014-05-16T19:40:34+00:00

Robert, I have the original Windows 8 OEM disk that I bought when I built the machine.

Sounds like you could at least create another partition, install W8, update it and then use that as /source: maybe even with /LimitAccess. But what I was wondering is what if you just make a semi-right guess about /source: without /LimitAccess does that make WU do anything different?

I hate to say this, but I really don't know what any of that means. Sorry but you would need to provide step by step instructions.

Just got off the phone again with Microsoft technical support. No help at all. Once she tried all the same things we have been trying, she again said I need to buy Windows 8.1 and do an in place upgrade. This sucks.
Was this answer helpful?

2 people found this answer helpful.

0 comments No comments