Forum Discussion
Outlook not parsing ics invites with rrule BYMONTHDAY=-1 or BYSETPOS=-1 properly
Current Behavior When an ics event is attached or imported as a file, and the rrule contains either BYMONTHDAY=-1 or BYSETPOS=-1, it is not properly converted to the outlook/exchange meeting type an...
Verify Outlook version support
1. Run Outlook → File → Account → About Outlook to confirm version ≥ 2103
Perform Office Repair:
2. Control Panel → Programs and Features → Microsoft 365 → Changes → Quick Fixes
3. Force the new parser to be enabled via the registry.
Press Win+R and type regedit
4. Navigate to:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\Calendar
Create a new DWORD (32-bit) value:
Name: EnableModernRecurrenceEngine
Value: 1
Hi Rupert, thank you for the response. I had only noted this in the "Reproduction Environment" part of my post, but I am personally using Outlook on iOS. I have not tested on Windows.
AFAIK the setting Modern Recurrence Engine in Outlook for Mac is enabled by default.