iPhone staff user being constantly signed out of M365 mail

[kennysarmy]

We've had a member of staff report the following:

 

I’m not sure who to speak to about this but I am having great difficulty using my e-mail address as it logs me out so quickly and then it keeps flashing up on my laptop all the time that I need to re-input the password  even if I’m not using that email it gets in the way of other work.
Logging in is also time consuming as the password is long and I have to look it up plus I then have to do two stage verification with my phone.  Both of those ar understandable but not when I have to do it 10 to 15 times a day!
I don’t have this problem with the other e-mail accounts.
Is there any way the settings can be adjusted so it doesn’t log me out so often?   Could it at least give me 2 or 3 hours before logging me out if not more?

 

followed up with:

 

I’m just trying to access my email account via the Apple mail app or outlook app - not in a browser.  
It’s a real problem for me as I get kicked out and then get no notifications of incoming mail until I log back in again.  That means I’m missing some urgent emails.

 

followed up with:

 

I don’t think this is anything to do with my phone.  The problem happens on my desktop too and it happens using both the Apple mail app and the Outlook app. Basically I get logged out of my School email account really quickly.  It doesn’t happen with my accounts or any other of my several email accounts. 

I just asked ChatGPT what might be causing the problem.  Does any of the following sound like something you might be able to fix?

 

 

 

I have no other users with this issue.

 

I don't know much about MAC's or iPhones.

 

Anyone have any ideas what to check in M365?

Edited May 15 by kennysarmy

[kennysarmy]

Our MFA policy has a Sign-in Frequency set to 6 hours - so it's not that....

[cw80]

Avoid using custom signin frequency for normal users.

 

The mobile apps rely on background token refreshes rather than interactive token refresh’s and custom signin frequency breaks that causing more sign outs.

 

Microsoft recommend relying of the default as they check the security posture of the session before deciding action.