Win8.1update error code 80073712 solution

win8.1update error code 80073712 Solution:

Many users report that when installing Win8.1 Update, there will be a message like this: "Unable to complete the upgrade, undo the change", then an error occurs. Code 80073712 also does not provide any details to inform users how to fix this problem.

A user of the Microsoft Community Forum wrote that the installation of KB2919355 was quickly completed 74%, and it was very slow at 89%. Eventually, an error message was displayed, "Unable to complete the upgrade, undo the change" ;, there is no other detailed information. I wasted a lot of attempts yesterday, and using any of the methods mentioned in the previous post did not help. I installed Win8.1 on a 240GB SSD with 50GB of free space and data stored on a separate drive.

Although there are several solutions available at the moment, these methods are not very effective. Microsoft has not provided a solution to the problem, and foreign media has contacted Microsoft on this matter.