Read the statement by Michael Teeuw here.
TypeError: curr.start.toISOString is not a function
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 Basically one of us has to find the time to investigate. The way Office386 creates its dates is really odd. Leave it to Microsoft to break things … as always. 
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 ok, my girlfriends calnedar is working. also with office 365 :-) so stupid… 
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 Does she have the same events as you? Setup the same way? Same time zones configured? 
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 she has different events in her calendar, but the all the other things are the same as mine. 
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 Do you have a calendar feed which I can test that gives the error? 
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 please give me your Mailadress, I’ll share my Calendar with you. :-) 
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 Got it. Thanks. Will probably be able to look into this next week. Is that ok? 
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 yeah, no problem. today my calendar is running. I’ve made no changes… strange, I’ve sent you the link to the working one. Thanks! :hand_splayed_tone1: 
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 @MichMich did you find the problem? 
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 @Bangee Did not have any time to look into this … I’m sorry! Did I understand it correctly that you managed to solve it with the new calendar feed you sent me? 



