ICS invite not updating calendar automatically

[ruchikarvir]

Below is the ICS File format :

BEGIN:VCALENDAR Content-Type: text/calendar; charset=utf-8; method=REQUEST; name=invite.ics' Content-Transfer-Encoding: Base64 Content-Disposition: attachment; filename=invite.ics PRODID:-//Microsoft Corporation//Outlook 14.0 MIMEDIR//EN VERSION:2.0 METHOD:REQUEST X-MS-OLK-FORCEINSPECTOROPEN:TRUE BEGIN:VTIMEZONE TZID:GMT BEGIN:STANDARD END:STANDARD END:VTIMEZONE BEGIN:VEVENT ATTENDEE;PARTSTAT=ACCEPTED;[email protected];RSVP=TRUE:mailto:[email protected] ATTENDEE;PARTSTAT=ACCEPTED;[email protected];RSVP=TRUE:mailto:[email protected] ATTENDEE;PARTSTAT=ACCEPTED;[email protected];RSVP=TRUE:mailto:[email protected] CLASS:PUBLIC CREATED:20231023T060000 DESCRIPTION:Outlook Invite Test using SENDOUTLOOKCALENDARICSINVITE DTEND;TZID=GMT:20231023T110000 DTSTAMP:20231023T060000 DTSTART;TZID=GMT:20231023T060000 LAST-MODIFIED:20231023T060000 ORGANIZER;[email protected]:mailto:[email protected] SUMMARY;ENCODING=QUOTED-PRINTABLE:Outlook invite test TRANSP:OPAQUE UID:24185396639688100648742110050169689808572026479082155165655176806312270322825734562502581671195530307722709231344647 1 X-MICROSOFT-CDO-BUSYSTATUS:BUSY X-MICROSOFT-CDO-IMPORTANCE:1 X-MICROSOFT-DISALLOW-COUNTER:FALSE X-MS-OLK-AUTOFILLLOCATION:FALSE X-MS-OLK-CONFTYPE:0 BEGIN:VALARM TRIGGER:-PT15M ACTION:DISPLAY DESCRIPTION:Reminder END:VALARM END:VEVENT END:VCALENDAR

Tried setting the headers..PARTSTAT=ACCEPTED but still it isn't working.

#ics