We have confirmed that the issue where Microsoft Teams invitation emails and calendar items were being incorrectly flagged has been resolved following the action taken by WitSecure.
Regarding the emails and calendar items that were incorrectly flagged, we kindly ask you to release them via the administration screen.
We apologize for the inconvenience this has caused.
Posted Dec 02, 2025 - 19:41 JST
Investigating
現在 HENNGE Cloud Protection にて Microsoft Teams の招待メールや予定表が誤って検知される事象を確認しております。
We are currently confirming an issue in HENNGE Cloud Protection where Microsoft Teams invitation emails and calendar items are being incorrectly flagged/detected.
We are actively investigating and working on a resolution in cooperation with WitSecure.
This issue may be mitigated by adding the following URLs to the trusted list in the HENNGE Cloud Protection policy settings: [Exchange] > [URL Scanning] > [Trusted Websites]. We would appreciate it if you could try this workaround.