Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may have been disabled and may have switched to English in Exchange Online. Final status: We’ve confirmed with affected users that this issue is resolved following the deployment of our fix. Scope of impact: Users attempting to use their IME for Japanese/Korean input may have been impacted. Start time: Friday, June 12, 2026, at 12:51 AM UTC End time: Thursday, June 18, 2026, at 5:57 PM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, was causing issues within the IME flow, resulting in impact. Next steps: We’re reviewing our validation and updating procedures to better detect and prevent issues like this prior to deployment in the future. This is the final update for the event.

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: Our updated fix deployment has completed and we're reaching out to affected users to confirm that this fix has fully remediated the event. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Friday, June 19, 2026, at 12:30 AM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: We've confirmed that our fix aimed at reverting the offending service update didn't include all necessary components required to remediate impact for this issue. We've corrected this fix and have placed it back in queue for safe deployment, which we expect will initiate by our next scheduled communications update. Once deployed, we'll monitor saturation progress and provide a timeline for its completion as one becomes available. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Thursday, June 18, 2026, at 12:30 AM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: We've received confirmation from affected users that impact persists following the completed reversion. We're investigating why the reversion has not fully alleviated the issue and are assessing why users have not yet received the updated client version containing the fix. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Wednesday, June 17, 2026, at 7:30 PM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: We're continuing our efforts to reach out to affected users to confirm if impact has ceased after our deployed fix. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Wednesday, June 17, 2026, at 9:00 AM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: Our deployment to revert the offending service update to remediate impact has completed. We're reaching out to your representatives to confirm if impact has ceased. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Wednesday, June 17, 2026, at 4:00 AM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: We've completed our review of the HTTP archive format (HAR) logs and identified that a recent service update, intended to modify which touch keyboard appears when users enter email addresses in the recipient field, caused impact to the IME flow and is resulting in impact. We're reverting the offending service update to remediate the impact, which we anticipate will be complete by our next scheduled communications update. Once the reversion is completed, we'll test with a subset of affected users to validate remediation. Scope of impact: Your organization is affected by this event, and users encountering the IME for Japanese/Korean input is disabled and switches to English in Exchange Online. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Root cause: A recent service update, intended to modify which touch keyboard appears when users enter email address in the recipient field, is causing issues within the IME flow, resulting in impact. Next update by: Wednesday, June 17, 2026, at 2:00 AM UTC

Title: Users' Input Method Editor (IME) for Japanese/Korean input may be disabled and may switch to English in Exchange Online User impact: Users' IME for Japanese/Korean input may be disabled and may switch to English in Exchange Online. Current status: We're analyzing HTTP Archive logs and diagnostic data to pinpoint the source of impact to determine our next steps. Scope of impact: Users attempting to use their IME for Japanese/Korean input may be impacted. This is subject to change while our investigation continues. Start time: Friday, June 12, 2026, at 12:51 AM UTC Next update by: Tuesday, June 16, 2026, at 7:30 PM UTC