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James Harrell
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Exchange 2016

I have just completed migrating to exchange 2016. Email is flowing in and out properly and all users have access to email via Outlook web access. However, no one with a mobile device is able to connect to The Exchange Server. Everyone receives the error message authentication failed.

any thoughts on what is happening here?
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Jason Crawford

8/22/2022 - Mon
Todd Nelson

When you say "all" users do you mean "all" users or just those users you are testing?

Assuming the latter, are those users a member of any privileged groups (i.e. Domain Admins, Enterprise Admins, Schema Admins)?

If so, within the advanced security settings of the users, enable "Allow inheritable permissions..."

After enabling, the mobile users should have access to their mailboxes.

Reference...
https://technet.microsoft.com/en-us/library/aa998240(v=exchg.80).aspx
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James Harrell

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Todd Nelson

Run the ActiveSync tests from the remote connectivity analyzer ... https://testconnectivity.microsoft.com

Hopefully, it provides you insight to what might be happening.
davorin

Try to use exchange connectivity (acivesync) test at https://testconnectivity.microsoft.com
Please use a test or normal user account and change the password afterwards.
It can give you additional information about where the problem is.
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davorin

Todd, sorry for repeating your suggestion.
Todd Nelson

j_harrell, will you provide a status update?
Jason Crawford

No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: j_harrell (https:#a41825461)

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

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