This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
I got an error for this Update for Windows Security platform - KB5007651 (Version 1.0.2109.27002) and can't seem to find a solution. Install error - 0x80070643 Anyone got any ideas?
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.
Check in Security Options if Core Isolation is enabled. If not, enable this option after uninstall incompatible driver, if any, with "pnputil /delete-driver oemXX.inf /uninstall /force /reboot" command (see https://www.youtube.com/watch?v=aVkLp_-WSo4).
Then apply the KB5007651update
Hi, I still encounter a Windows Security Platform Update error with error code 0x80070643. I had tried all the solutions you provided yet nothing is solved. Hope you could help me out soon. Thank you
I have 2 (of 98) new Surface Pro 8 and Surface Laptop 4 machines that are brand new out of box. I installed Windows 11 Enterprise to create images and I get this error on both machines when trying to install. I reinstalled Windows 11 Enterprise on one of them, installed no other apps, ran windows update and still get the error with this update.
I don't want to have to create images with this error in them but I don't think I have a choice. None of the solutions offered in here worked.
Will there ever be a solution from Microsoft?
Using procmon from SysInternals I saw that it tried to write to C:\Windows\System32\SecurityHealth using my logged in account. By giving my account Modify permissions to that folder the update went fine.
To give myself Modify permissions, I had to first set myself as owner of the folder. After the update had successfully been applied I I removed my write permissions and set SYSTEM as owner again.
AMAZING! I've tried almost everything to get rid of this stupid message and you were 100% on target with this. Changed the owner and update installed fine. Thank you SO much! Exceptional research on your part.
