Jun 03 2022 01:59 AM - edited Jun 03 2022 02:00 AM
So, I listed all of our tenant guest users 'lastSignInDateTime' attribute from MS Graph.
Most have up to date values here, but some got no info here (I guess its because they were never logged on), and some got the value '01.01.0001 00:00:00' ...which I guess also means they were never logged on?
But I have one confirmed active user with the '01.01.0001 00:00:00' value. Which makes me doubt if i can use these dates to delete inactive guest users? (This user is participating in team discussions, but his AAD sign-in log is also empty).
Jun 03 2022 07:21 AM - edited Jun 03 2022 07:34 AM
Solution
If Teams is all they're signing into and are doing so via the app, they're probably not triggering in "interactive login".
PS: Your assumption is correct about the early date, as that is the minimum value of a [DateTime] structure. The minimum value does typically indicate inactivity in attributes that cannot be null.
Cheers,
Lain
Jun 07 2022 11:58 PM
Jun 03 2022 07:21 AM - edited Jun 03 2022 07:34 AM
Solution
If Teams is all they're signing into and are doing so via the app, they're probably not triggering in "interactive login".
PS: Your assumption is correct about the early date, as that is the minimum value of a [DateTime] structure. The minimum value does typically indicate inactivity in attributes that cannot be null.
Cheers,
Lain