Microsoft has acknowledged a new issue affecting Outlook for Microsoft 365 users and causing email-sending problems for those with too many nested folders.
According to Redmond, this is likely related to an older issue concerning mailboxes with more than 500 shared folders, a limit lifted in 2019.
It seems that Microsoft failed to consider cases when users would also have that many folders in their primary mailbox.
While Microsoft is currently investigating this newly acknowledged issue, it also provided affected customers with some tips to workaround the email sending problems.
The company's recommendations include reducing the number of folders that have subfolders to under 500, with at most 450 nested folders during this issue's ongoing investigation.
Another temporary fix would be to keep all mailbox folders collapsed instead of expanded.
This week, Microsoft also fixed a bug causing Outlook Desktop clients to crash when sending emails from Outlook.com accounts.
Redmond also issued fixes for some users impacted by a Microsoft 365 issue leading to 'Something Went Wrong ' sign-in errors, blocking many affected customers from using desktop Office apps.
Previously, they addressed another Microsoft 365 issue causing notable delays while saving attachments in Outlook Desktop to a network share.
This year, it also tackled several other Outlook-related issues, including bugs preventing Microsoft 365 customers from accessing emails and calendars and slow starts and freezes during cache re-priming.
Microsoft fixes Outlook Desktop crashes when sending emails.
Microsoft shares temp fix for Outlook crashes when sending emails.
Microsoft 365 users get workaround for 'Something Went Wrong' errors.
Microsoft fixes Outlook Desktop bug causing slow saving issues.
This Cyber News was published on www.bleepingcomputer.com. Publication date: Fri, 08 Dec 2023 18:55:09 +0000