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Proxy in standard-mode ask for Authentication while "surfing", if user uses multiple MS-Teams Tenants.

Hi all,
We have some users who are repeatedly asked for proxy authentication.
Only users use multiple MS-teams tenants see this problem. (We don't know users with activity within multiple ms-tenants without this problem)

We use AD-SSON and users are not normally asked for a password.
If the query comes to the affected users, they have to enter their AD login data and can continue surfing.

We disabled Proxy-Authentication for Teams and sharepoint pages. Didn't help.

Ideas?

Thanks and Greetings

Dirk

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0 Vivek Jagad over 1 year ago

Hi dirkkotte ,

Thank you for reaching out to the community, this is something new and interesting, may be you can try adding an expectation which skips authentication for target domains and coming from these users/groups (which has multiple MS-teams tenants)

Thanks & Regards,
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Vivek Jagad | Team Lead, Technical Support, Global Customer Experience

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0 dirkkotte over 1 year ago in reply to Vivek Jagad

Thanks,

We already disabled Proxy-Authentication for Teams and sharepoint domains. Didn't help.

Dirk

Systema Gesellschaft für angewandte Datentechnik mbH // Sophos Platinum Partner
Sophos Solution Partner since 2003
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0 PhilippRusch over 1 year ago in reply to dirkkotte

Hello Dirk,

can you share the list of Microsoft domains you excluded in this test?

I remember having to exclude Microsoft domains for some purposes and the list was lengthy.

Mit freundlichem Gruß, best regards from Germany,

Philipp Rusch

New Vision GmbH, Germany
Sophos Silver-Partner

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0 PhilippRusch over 1 year ago in reply to dirkkotte

Hello Dirk,

can you share the list of Microsoft domains you excluded in this test?

I remember having to exclude Microsoft domains for some purposes and the list was lengthy.

Mit freundlichem Gruß, best regards from Germany,

Philipp Rusch

New Vision GmbH, Germany
Sophos Silver-Partner

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