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What happens to Windows 10 login should MS servers go down?


Hypothetical question but logging into Windows 10 is heavily reliant on the MS account and I wonder what would occur if MS servers were down (or maybe your own ISP is having problems)?

We always get met with a login screen as we have several family users (all MS accounts as opposed to local). I presume on login there is some kind of handshake/authentication with MS servers? But what happens if the MS server was down for any reason? I assume it would still login ok and in effect act as a local account - would the login pause/stay on 'logging in' for a set time waiting for a MS response before timing out after a set period?

it only got me thinking because my wife logged in earlier. Normally after a couple of seconds she's on the desktop but earlier on it took a bit longer on the 'logging in' phase - it wasn't anything to write home about, say 10 - 20 secs. But it got me wondering whether on this occasion she was just the victim of a sluggish MS server response or something like that. We did test again a bit later on and she was back to logging in within a second or two.

An easy test is temporarily disable/disconnect your network connection and see how everything works.
For me, it's more likely my ISP service will go down, and i don't have any internet connection possible.

As a backup precaution, create a Local Admin account.
Then you can login in with that if something happens to MS servers/accounts and no-one can login with a MS account.
You can have it PW protected where only you know the PW, so you can do whatever needed in case of emergency.

Hypothetical question but logging into Windows 10 is heavily reliant on the MS account and I wonder what would occur if MS servers were down (or maybe your own ISP is having problems)?

We always get met with a login screen as we have several family users (all MS accounts as opposed to local). I presume on login there is some kind of handshake/authentication with MS servers? But what happens if the MS server was down for any reason? I assume it would still login ok and in effect act as a local account - would the login pause/stay on 'logging in' for a set time waiting for a MS response before timing out after a set period?

it only got me thinking because my wife logged in earlier. Normally after a couple of seconds she's on the desktop but earlier on it took a bit longer on the 'logging in' phase - it wasn't anything to write home about, say 10 - 20 secs. But it got me wondering whether on this occasion she was just the victim of a sluggish MS server response or something like that. We did test again a bit later on and she was back to logging in within a second or two.
Scotty...you could test that scenario. Shutdown. power off. Unplug the Ethernet or if on WiFi, turn off the router. No possible connection (unless you hit a neighbors WiFi lol). Power back up...see what happens!

Ok thanks to you both, yes I do have a local admin account that we never use as another way in.

i just wondered if anyone had any experience of what happens - I was hesitant to test the scenario in case it had any side effects. I might take a recent system image first before trying this out.

Periodically log in with the Local account to make sure it still works.

I had a situation once where a MS account was getting errors and warnings.
The local account worked without any problems.
It was a pita to fix the MS account, it took me several hours.
That was with 8.1, but such things can happen.
I agree, backup images are important and i do them regularly.
Unfortunately, restoring a backup image would not fix a problem with a MS account (for me).

Turned out it is a bug, and the MS account had to be "fixed".

What happens to Windows 10 login should MS servers go down?