MS Outlook and O365 issue
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Open a support ticket. It sounds like a backend problem now.
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I agree. Get MS support involved.
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I've seen similar issues but the user was connecting to on-premise Exchange.
Did you delete the .OST file before you recreated her account?
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@Reid-Cooper said:
What about disabling Pertino while testing?
I want to say yes I did. I did uninstall and reinstall Pertino. One issue with Pertino being disconnected / uninstalled is that she is unable to connect to AD and authenticate...
But I can disconnect / End Task and see what that does.
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@gjacobse said:
@Reid-Cooper said:
What about disabling Pertino while testing?
I want to say yes I did. I did uninstall and reinstall Pertino. One issue with Pertino being disconnected / uninstalled is that she is unable to connect to AD and authenticate...
But I can disconnect / End Task and see what that does.
It wasn't using cached credentials? That seems odd.
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@coliver said:
It wasn't using cached credentials? That seems odd.
No,... all Windows Cached Credentials were deleted...
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@scottalanmiller said:
I've had this in the past and the answer was always "it just doesn't work."
We had one here and the answer was, use OWA.
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I've done the same thing for years.... just use OWA.
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When we've seen this issue it's usually been saved credentials in Windows credential manager. For some reason they can authenticate but then Outlook randomly tries the credentials in credential manager. If the credentials are old you will get a login prompt. That's always the first thing I check.