System password changed by latest update

Hi, I've seen no such change.. perhaps the question is which account details relate to your admin account.

the primary username and password has been the same.

- would those be for a standard user account for example?

I'm guessing you tried to use your standard user credentials to authorise the change.

The part about local account suggests the reboot tried to go with that instead of the default Microsoft Account. When I've set up a Win10 or Win11 with the Microsoft Account then later add a Local Account there is always two choices as to which to use on the log-in screen. The profiles are different from each other so changes in one shouldn't/won't show in the other. And I've seen issues where the two User names were exactly the same and problems showed up in saved files storing in the same folders in Users, hard to separate.

Your OP seems to say that you have a problem changing a task in Task scheduler.
I can't see anything in there indicating any other problem.
I can't see anything in there indicating that there is anything wrong with any password.

Task scheduler can really be awkward about making changes to elevated tasks.
I assume you are running Task scheduler as Admin.
It's very often best to just delete then recreate an elevated task if it needs changing. You can often export it, delete it, do the changes in its exported xml file then import it.


All the best,
Denis

But some things require an admin account.

An admin account can be local or MS.

jack63ss said:

Since I installed this system 3 years ago the primary username and password has been the same. Then a couple of days ago Windows did an update (see below). After I rebooted I tried to make a change in Task Scheduler and it told me that the username or password was no longer valid. HUH ? After a while of trying to figure this out I tried using the password credentials for my Microsoft account, and it worked just fine. Turns out if I sign out I have to use the Microsoft account password there too.

I suspect it has nothing to do with the update, it sounds more like you have switched your Local account to being a Microsoft account.

It is all too easy to do this by accident, just signing in to the Store or OneDrive can do it.

To use the Store or OneDrive it will first ask you to sign in with your MS account. The box for signing in to your MS account innocently asks if you'd like to use this account everywhere, with a big friendly blue button labelled 'Next' for you to click. In very small print at the bottom left is a link that says 'Microsoft apps only'. Click Next and you suddenly find your Windows Local account has turned into a Microsoft account. If so, then it's easy enough to switch back.

How to Tell if Local Account or Microsoft Account in Windows 10

Switch to Local Account in Windows 10

If you wish to change a MS account to a local account, or vice versa, there are tutorials in the searchable Tutorials section for that.