User impact: Users may be unable to join shared channels using some links to messages in Microsoft Teams.

More info: This issue specifically affects links generated using the “Copy Link” option through the three dots menu located at the top right of the shared channel. Users can bypass this impact by generating links to channels using any alternate method, such as by right-clicking on the channel in the left rail menu or any specific message within the shared channel and choosing the “Copy Link” option there.

Current status: The deployment of our fix is nearing completion but is taking additional time. We now anticipate the deployment will complete by Friday, September 18, 2026.

Scope of impact: Users joining channels or generating channels links using the “Copy Link” options within the three dots menu located at the top right of shared Microsoft Teams channels may be impacted.

Start time: Wednesday, July 1, 2026, at 12:00 AM UTC

Root cause: A recent update intended to improve the data pathways leveraged to facilitate channel link generation is causing the affected links to be malformed, leading to impact.

Next update by: Friday, September 18, 2026, at 9:00 PM UTC