Did you check the recurrence pattern for the end date? Because it is happening on all devices, it looks like the end date is the problem.
-- Diane
my recurring events for July are showing up on my August calendar, same for subsequent months.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(160, 94%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVR%3C/text%3E%3C/svg%3E)
Vincent Rykes
25
Reputation points
my recurring events for July are showing up on my August calendar, same for subsequent months. Same problem on my other apple devices
Outlook | MacOS | New Outlook for Mac | For home
{count} votes
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 99%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJZ%3C/text%3E%3C/svg%3E)
Justin Zylstra 0 Reputation points2025-08-04T20:22:13.03+00:00 I have been having the same issues for about a week now. It is all my annually reccuring events. It happens on my mac when running the new outlook for mac. If i run Legacy Outlook or go to the web interface there is no issue. Have the same issues on my iPhone with the outlook app, but not the built in iphone calendar app
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 99%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGR%3C/text%3E%3C/svg%3E)
Gage Regier 0 Reputation points2025-08-11T13:30:59.1533333+00:00 I have had the exact same issue, have not been able to figure it out no matter what I try
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Vincent Rykes 25 Reputation points
2025-09-02T12:44:43.7966667+00:00 Has anyone been able to resolve above issue
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(64, 74%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERH%3C/text%3E%3C/svg%3E)
Roan Heemstra 0 Reputation points2025-09-11T18:13:17.74+00:00 Having the same issue here, it's fine on Outlook for Android and Web. I only have this on MacOS. Date is set correctly, repeat is set to yearly in my case. Recurring events from September are showing in October. I do not have this issue in Outlook Classic
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(156.8, 37%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKF%3C/text%3E%3C/svg%3E)
Kurt Fimmers 10 Reputation points2025-09-13T15:32:04.2966667+00:00 I have exact the same issue. Reminder Yearly recurring for Wedding anniversary shows in the wrong month. It is correct the native macOS calendar and in Outlook OWA. The same appointment dialog shows two different months as well, which is clearly a bug...
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(256, 98%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJ0%3C/text%3E%3C/svg%3E)
Jaison-0230 5 Reputation points2025-09-14T13:17:12.79+00:00 I've encountered the same issue on both the MacOS and iOS Outlook apps - the Web version works fine. The recurrence is set to repeat yearly, but the actual event on the calendar shows up one month off. This problem has nothing to do with how the end date is set.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(48, 63%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESG%3C/text%3E%3C/svg%3E)
Simon Grossmann 5 Reputation points2025-09-16T12:20:57.03+00:00 I have the same issue since today. Updated my Mac to macOS Tahoe yesterday evening and updated Outlook to Version 16.100.4 (25090553) today. Since then, it shows yearly recurring events exactly one month late.
For example: New Year
The bug only occurs on the macOS client. The events show up on the right day in the browser. Has anyone been able to solve this issue? It seems to be a macOS client issue only. It also seems to be only a displaying issue.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(38.4, 46%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMG%3C/text%3E%3C/svg%3E)
Michele Genna (mgenna) 0 Reputation points2025-10-17T10:49:19.52+00:00 Same issue .. I realized I had it only the second time I wished a friends happy birthday a month later :-( it seems to be limited only to Yearly recurring Reminder .. but anything resolved the issue
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3 answers
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Mr White 85 Reputation points2025-08-01T16:11:44.75+00:00 Check Outlook Web to identify where the issue belongs to
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Bob Jones AKA CyberTaz MVP 427.4K Reputation points2025-08-01T19:15:58.9166667+00:00 Also confirm that the repeat isn't set to Monthly.