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.

I have to say I hate the update KB2919355, at least this update has problem for one of my existing programs, before update this my program work very well but doesn't work at all afyet install the update KB2919355. I have to uninstall it every time after the machine installed it automatically, or avoid to intall it for every new update remind. Howevery just about one week before my machine installed the update KB2919355 and I had to uninstall it, but after many times of uninstall, the KB2919355 is still there after every restart of the machine, during the restart of the machine the message showing "we couldn't complete the updates. Undoing changes." It made me crazy!

You aren't protected without 2919355. What exactly is the problem after installing it?

Hi I am a Windows 8.1 64bit user and the latest updates are just not working. The list below are all the ones which are failing. My computer installs them, then the computer shutsdown and then tells me that the updated failed. Got the error: Installation Failure: Windows failed to install the following update with error 0x80070BC9: Update for Windows 8.1 for x64-based Systems (KB2971203).

error 0x80070BC9 C:>set /a c = 0xbc9 3017 C:>net helpmsg %c% The requested operation failed. A system reboot is required to roll back changes made. As usual I suspect you are going to have to supplement your error code with some context. At least the code explains your "shutdown" symptom.

I have been trying to install this update for a month now (even manually), failing each time with the same error code. It is in the restart that it fails with the message: We couldn’t complete the updates, Undoing changes. Don’t turn off your computer. Is there a solution yet? // Rikard

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

2014-07-14T03:37:14+00:00

I have to say I hate the update KB2919355, at least this update has problem for one of my existing programs, before update this my program work very well but doesn't work at all afyet install the update KB2919355. I have to uninstall it every time after the machine installed it automatically, or avoid to intall it for every new update remind.

Howevery just about one week before my machine installed the update KB2919355 and I had to uninstall it, but after many times of uninstall, the KB2919355 is still there after every restart of the machine, during the restart of the machine the message showing "we couldn't complete the updates. Undoing changes." It made me crazy!
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Anonymous

2014-07-14T04:47:29+00:00

You aren't protected without 2919355. What exactly is the problem after installing it?
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Anonymous

2014-07-14T15:41:16+00:00

Hi

I am a Windows 8.1 64bit user and the latest updates are just not working. The list below are all the ones which are failing. My computer installs them, then the computer shutsdown and then tells me that the updated failed.

Got the error:

Installation Failure: Windows failed to install the following update with error 0x80070BC9: Update for Windows 8.1 for x64-based Systems (KB2971203).
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Anonymous

2014-07-15T01:56:17+00:00

error 0x80070BC9

C:>set /a c = 0xbc9 3017 C:>net helpmsg %c% The requested operation failed. A system reboot is required to roll back changes made.

As usual I suspect you are going to have to supplement your error code with some context. At least the code explains your "shutdown" symptom.
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Anonymous

2014-07-16T09:10:33+00:00

I have been trying to install this update for a month now (even manually), failing each time with the same error code.

It is in the restart that it fails with the message:

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

Is there a solution yet?

// Rikard
Was this answer helpful?

0 comments No comments