Share via

My calendar on Iphone outlook 365, when i put in a appointment, yearly repeated, it shows up exact 1 month later, on my desktop it is correct

Bertil Ten Voorde 20 Reputation points
2025-12-12T09:50:08.06+00:00

On my Iphone calendar (outlook 365) when i put in an appointment it shows up exact 1 year later, e.g. 10 dec yearly repeated, will show up 10 january. All yearly appointments on my desktop are ok. But all yearly repeated appointments on my Iphone shows up 1 month later.

What can i do to solve this ?

Moved from: Microsoft 365 and Office | Development | Microsoft 365 Developer Program

Outlook | Outlook for mobile | Outlook for iOS | For business

Answer accepted by question author

  1. Rin-L 19,085 Reputation points Microsoft External Staff Moderator
    2025-12-12T11:33:00.2466667+00:00

    Hi @Bertil Ten Voorde, 

    Thank you for posting your question in the Microsoft Q&A forum. If you’ve already confirmed that the time zone settings on both your iPhone and your Outlook desktop application are identical, the issue may be related to the Outlook app on your phone or the device itself. 

    To start, please try these basic troubleshooting steps: 

    • Remove and re-add your account on your iPhone: Go to Settings > Mail > Accounts, remove your Outlook account, and then add it back. 
    • Uninstall and reinstall the Outlook app on your iPhone to refresh the app configuration. 

    If the issue still persists, please try signing in on a different mobile device (borrow one if possible) using the same account and check if the calendar events appear correctly there. This will help us determine whether the problem is device-specific or account-related.  

    As a forum moderator, I don’t have access to backend tools or permissions to investigate directly on your device, but I truly want to assist you. I hope you can share some additional details based on the questions above so that I can research further and suggest the most appropriate next steps for you. 

    Thank you for your understanding and cooperation, I look forward to your reply. 

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.  

    1 person found this answer helpful.

1 additional answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. Q&A Assist
    2025-12-12T09:50:21.1166667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    It sounds like you're experiencing a synchronization issue between your iPhone and your Outlook 365 calendar. Here are some steps you can take to troubleshoot and resolve this issue:

    1. Check Time Zone Settings: Ensure that the time zone settings on both your iPhone and your Outlook desktop application are the same. If they differ, it can cause appointments to appear on the wrong dates.
    2. Recreate the ActiveSync Relationship: Sometimes, the ActiveSync relationship can become corrupted. To fix this:
      • Remove the ActiveSync relationship on your iPhone.
      • Remove the ActiveSync relationship from Outlook Web App by signing in, going to Settings > Options > Phone > Mobile Devices, and deleting the relationship.
      • Restart your iPhone and then re-establish the ActiveSync relationship.
    3. Disable Outlook Add-ins: If you have any add-ins enabled in Outlook that might affect calendar items, try disabling them temporarily to see if that resolves the issue.
    4. Update Your Apps: Ensure that both your Outlook app on your iPhone and the desktop version are updated to the latest version. Sometimes, bugs are fixed in newer releases.
    5. Check for iOS Updates: Make sure your iPhone is running the latest version of iOS, as updates can resolve compatibility issues.

    If the problem persists after trying these steps, you may want to reach out to Microsoft Support for further assistance.

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.