I'm running into similar issues with a client, seems very random, open ticket with Microsoft. Did anyone get anywhere yesterday towards resolution? -----Original Message----- From: Outages <outages-bounces@outages.org> On Behalf Of Marshall, Owen (GE Appliances, Haier) via Outages Sent: Tuesday, June 4, 2019 4:23 PM To: outages@outages.org Subject: [outages] Office 365 - frequent prompts for (re)authentication Hi outages@, We've observed a significant spike in our O365 users being prompted to re-authenticate their Outlook client. One of our engineers bumped into this post: https://www.reddit.com/r/sysadmin/comments/bwpyah/office365_auth_prompt_issu... ... looks like it isn't just us. -- regards om _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages