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.

Same as others. KB2919355. No error code, just "undoing changes". Tries again in same reboot sequence but fails. Same here, no update history, it looks like it's been wiped by the attempted install of -355.

Microsoft: can't you demonstrate your commitment to us by making a suitable online image accessible to the dism commands As an add-on to this, offer to send out, at your expense, to any affected users that ask for it a Windows 7 install CD so they can upgrade their machines to an OS that actually works properly. If I have to do a full system rebuild it sure ain't gonna be with Windows 8 again.

Before I let Msoft loose applying this update I took a full Acronis backup. (Call me a pessimist but 800meg updates are never good news) Is there any point restoring this and trying again. I.E has anything changed in KB2919355 that means it now works or is it still gathering more and more problems? Cheers

After using dism to remove the 6 updates in the KB2919355 standalone installer, I went through most of Marek Kusmierski's script with the exception of doing the dism /resetbase (which appears to 'commit' all updates and prevent them from being backed out). The dism /scanhealth check identified one issue with the hashes of a Canon print driver - this is a very common issue which I also see on a laptop that successfully installed KB2919355. I also skipped the 'cleanmgr' step since I believe the same function is included in the regular Disk Cleanup procedure I follow prior to doing image backups. The Windows Update Troubleshooter still complained about a DataStore issue which I had hoped was due to issues with c:\windows\softwaredistribution (deleted as per Marek's script. My antivirus application was disabled throughout the process. I also left Windows Update disabled and used the standalone installer. The KB2919355 msu installed without any error messages. However the subsequent reboot showed the same restart at 8-10% into applying the update followed by a rollback of the update. I even tried deferring the reboot until all 6 of the fixes in the KB2919355 standalone installer had been installed - same problem at reboot. What is very odd is that the WindowsUpdate.log is showing no fatal errors. There are warnings but nothing that raises a red flag. At first reading, the WindowsUpdate.log entries at the time of the reboot provide no clue as to why the fixes were rolled back. I have subsequently done a dism /restorehealth that appears to have resolved the Canon driver issue and will try yet another install when I can free up some time. I may even turn over the laptop to Microsoft to see if they can make any headway. If not, I will start restoring the system partition from previous backups in the hope that it was something in the last few months that is blocking the install.

Has anyone had success downloading Win8.1 from the Microsoft site using their original OEM product key and then using the ISO to refresh their Win8.1 system? I am bumping into my monthly Internet traffic cap but a new billing month starts shortly.

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

2014-05-19T12:16:01+00:00

Same as others. KB2919355. No error code, just "undoing changes". Tries again in same reboot sequence but fails.

Same here, no update history, it looks like it's been wiped by the attempted install of -355.
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Anonymous

2014-05-19T12:24:29+00:00

Microsoft: can't you demonstrate your commitmentto us by making a suitable online image accessible to the dism commands

As an add-on to this, offer to send out, at your expense, to any affected users that ask for it a Windows 7 install CD so they can upgrade their machines to an OS that actually works properly. If I have to do a full system rebuild it sure ain't gonna be with Windows 8 again.
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2 people found this answer helpful.

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Anonymous

2014-05-19T13:54:55+00:00

Before I let Msoft loose applying this update I took a full Acronis backup. (Call me a pessimist but 800meg updates are never good news) Is there any point restoring this and trying again. I.E has anything changed in KB2919355 that means it now works or is it still gathering more and more problems?

Cheers
Was this answer helpful?

2 people found this answer helpful.

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Anonymous

2014-05-19T14:28:42+00:00

After using dism to remove the 6 updates in the KB2919355 standalone installer, I went through most of Marek Kusmierski's script with the exception of doing the dism /resetbase (which appears to 'commit' all updates and prevent them from being backed out). The dism /scanhealth check identified one issue with the hashes of a Canon print driver - this is a very common issue which I also see on a laptop that successfully installed KB2919355. I also skipped the 'cleanmgr' step since I believe the same function is included in the regular Disk Cleanup procedure I follow prior to doing image backups. The Windows Update Troubleshooter still complained about a DataStore issue which I had hoped was due to issues with c:\windows\softwaredistribution (deleted as per Marek's script. My antivirus application was disabled throughout the process. I also left Windows Update disabled and used the standalone installer.

The KB2919355 msu installed without any error messages. However the subsequent reboot showed the same restart at 8-10% into applying the update followed by a rollback of the update. I even tried deferring the reboot until all 6 of the fixes in the KB2919355 standalone installer had been installed - same problem at reboot.

What is very odd is that the WindowsUpdate.log is showing no fatal errors. There are warnings but nothing that raises a red flag. At first reading, the WindowsUpdate.log entries at the time of the reboot provide no clue as to why the fixes were rolled back. I have subsequently done a dism /restorehealth that appears to have resolved the Canon driver issue and will try yet another install when I can free up some time. I may even turn over the laptop to Microsoft to see if they can make any headway. If not, I will start restoring the system partition from previous backups in the hope that it was something in the last few months that is blocking the install.
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2 people found this answer helpful.

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Anonymous

2014-05-19T14:30:40+00:00

Has anyone had success downloading Win8.1 from the Microsoft site using their original OEM product key and then using the ISO to refresh their Win8.1 system? I am bumping into my monthly Internet traffic cap but a new billing month starts shortly.
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2 people found this answer helpful.

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