Outlook 365 won't take logins with Safari in 10.14 suddenly

[GabeShack]

Hey All,
Not quite JAMF specific, but wondering if anyone has found a workaround to an issue that came up last week. Since then any of our users (as well as peoples personal machines in their homes) who are using Safari and running 10.14.6 are having issues connecting to outlook. They can all sign in to the main page for 365, but when you click on outlook it just hits loops of redirects it seems like. Only answer I've found is to use chrome or firefox.

This does seem like something got changed on Microsofts Server side though since it is affecting machines that have not had a change or update.

I saw a piece on Teams specifically having an issue with the "cross-site tracking" feature, but turning that off also didnt resolve the issue.

Anyone have a solution?

Gabe Shackney
Princeton Public Schools

[GabeShack]

Catalina's version of Safari doesn't seem affected though.

Gabe Shackney
Princeton Public Schools

[kerouak]

yep, we experiencing the issues too... :-(

[kerouak]

?????
http://www.isaacoben.com/2014/03/27/adfs-3-0-iwa-browser-clients-support-for-firefox-and-safari/

[merps]

Also confirmed on our side - 10.14.16 build 18G1012. Chrome works fine, Outlook just hangs with "Working..." in Safari.

[jbutler47]

Are you able to log into "https://portal.office.com"? We've been using that URL as a workaround.

YMMV

[cbrewer]

Seeing the same. Supposedly a fix is coming?

https://apple.lib.utah.edu/remember-me-duo-apple-safari-13-0-3-2/

I opened a support case with Apple but they have not been helpful so far.

[Jordan_Hare]

I've only got 1 user with this issue today but i was scratching my head trying to figure it out. should've just checked here first.

[davidhiggs]

https://answers.microsoft.com/en-us/msoffice/forum/all/outlook-login-error-we-couldnt-sign-you-in-please/f1200bfe-6042-43a5-a6b1-3a54577a89ac

[kerouak]

F.Y.I. Teodor (Microsoft)
Monday, December 9, 2019 11:19 AM GMT
Hello Alex,

Thank you for contacting Microsoft Support. My name is Teodor and I am the Support Professional who will be working with you on your support request. You can reach me using the contact information in my signature.

As you have requested email only contact I will work with you via email. However, if you would like to discuss your issue by phone at any time please provide a phone number and let me know when is the best time to call.

I understand that the issue is related to service degradation EX197534.

As requested, I am sharing with you the latest status of the incident:

Exchange Online - Can't access email when using Safari web browser
2019-12-06 15:12:35 ~ N/A (3 days)
Status
Service degradation
Classification
Advisory
High Impact
No
Impact Description
Users may be unable to connect to the Exchange Online service when using Outlook on the web.
Latest Message

Title: Can't access email when using Safari web browser

User Impact: Users may be unable to access Outlook on the web from the Safari browser.

More info: This issue is specific to users using the Safari web browser to access Outlook on the web. While we are focused on remediation, users may be able to use alternate browsers to access Outlook on the web.

Current status: We're continuing to stand by for the requested diagnostic data, such as network traces and relevant error logs, so we can proceed with our investigation.

Scope of impact: Your organization is affected by this event, and users attempting to access Outlook on the web from the Safari browser are impacted by this issue.

Next update by: Monday, December 9, 2019, at 9:30 PM UTC

[nelsoni]

Safari 13.0.4 and macOS Mojave build 18G2022 seems to have fixed the issue. Tested on a 2013 MacBook Air.

[techjason · Accepted solution]

@gshackney We noticed the issue with some of our computers yesterday. However, Microsoft has since fixed the problem; see the link below. We have checked with some of our users that were having the issue, they say that it is not an issue anymore.

https://answers.microsoft.com/en-us/msoffice/forum/msoffice_outlook-mso_mac-mso_o365b/outlook-login-...