RS-Prerelease Build 25158 + ISO is out to Dev Channel

Here is once more and only with this 25158 Build, the same defender update had no issues at all with any other builds that used the same defender platform on 6 other machines. While 2 machines at 25158 already showed this problem earlier.

It maybe a conflict with Defender updating at the same time that W.U. is trying the same.

Hitting retry just cleared the error again. 🤣

Typical MS.

Here yet another box at 25158, stuck here installing 0% for a long time till it finally completes this time without the error. 😂

'CK',

Nor are mine, not in any way, shape or form. I always grab & keep the most recent ISO ('til the next), but my new Builds are done via WU as a Gen2 vm on Hyper-V. No problems or error messages with updating or running after that.

Cheers,
Drew![](https://learn-attachment.microsoft.com/api/attachments/30a15ce8-55dd-4f9d-85a4-facd58a25cb3?platform=QnA

OK, I'll clarify, my Def updates are not failing at all.

Can't reproduce your error on either PC.

It does not show any error in the history, it seems to eventually recover one way or another. 🤷‍♂️

Got the error 0x80070643 3 times so far after installing 25158. 😵‍💫

Can't reproduce your error on either PC.