Title: Some users can’t update calendar meetings in all Exchange Online connection methods and get an error
User impact: Users can’t update calendar meetings in all Exchange Online connection methods and get a “Recipient Rate Limit” error.
More info: Impact is specific to delegate users that are attempting to update calendar meetings.
As a viable workaround, users can uncheck Request Responses for large calendar meetings in Exchange Online.
Current status: Our current fix timeline is extensive, as the operation resulting in the “Recipient Rate Limit” error requires a complex solution beyond a code fix, which may take months to complete. While we continue to work on fix development, we’re reviewing screenshots of impact from affected users while we attempt to reproduce impact in our internal testing environment to identify with certainty the root of the behavior resulting in the issue to assist us in our remediation efforts.
Scope of impact: Impact may occur for some delegate users attempting to update Exchange Online calendar meetings.
Root cause: A subset of service infrastructure that facilitates calendar meeting updates is experiencing an impacting code issue that is preventing users from updating calendar meetings in Exchange Online.
Next update by: Friday, January 19, 2024, at 8:00 PM UTC
