Compare uptime, outage statistics, and incident history between Microsoft Teams and Slack. See which service has better reliability.
Note: Each service has different practices when updating its status page. One service may report more incidents due to transparency, not necessarily worse reliability. Compare these stats with context.
Status monitoring since September 2025
Some users are unable to search, chat or call users in Microsoft Teams Free
We're monitoring our fix deployment to ensure it has saturated throughout the entire affected environment before vali...
Users may intermittently be unable to join meetings or access Microsoft Teams...
We're continuing to develop our fix aimed at addressing the regression introduced by the offending Windows update aft...
Some users may experience issues signing into Microsoft Teams Free on mobile ...
We've identified a recent deployment that's causing some users to experience issues signing into Teams Free on mobile...
Status monitoring since April 2020
Trouble uploading files and emojis in Slack
We've identified the trigger, causing slow file and emoji uploads in Slack, and have deployed a fix. At this time, we...
Issues affecting file uploads, message edits, channel renames, and channel cr...
We're investigating a new incident.Current impact to end users: We’re aware of an issue affecting file uploads, mess...
EKM customers experiencing issues with channel loading and message delivery
We’re investigating this issue:Current status and actions being taken: We’re seeing renewed, elevated error rates and...
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