icloud calendar to ical: {"reason":"Invalid or missing Origin header","error":1}

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Level 1

13 points

icloud calendar to ical: {"reason":"Invalid or missing Origin header","error":1}

Hi,

For many years I have been using the technique as mentioned here: Archive or make copies of your iCloud data - Apple Support for converting my icloud calendars into ical format. For some odd reason this no longer works (my old scripts or manually). In Chrome or Firefox on Linux I get this response:

{"reason":"Invalid or missing Origin header","error":1}

When using wget, it returns:

HTTP request sent, awaiting response... 421 Misdirected Request

I see the same error when using Windows. Any ideas? Thanks.

Posted on May 24, 2017 3:32 AM

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Answer 1

dsits Author

Level 1

13 points

May 27, 2017 2:50 AM in response to dsits

FWIW.. I "solved" this by downloading iCloud for Windows, enabling "Contacts, Calendars and Tasks with Outlook", opening Outlook then exporting the calendars to .ical format for import to Google Calendar. I won't be using iCloud Calendar anymore so this suited me fine.

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Answer 2

dsits Author

Level 1

13 points

May 24, 2017 4:03 PM in response to zinacef

I've had two-factor authentication on for a very long time so I don't think that is it. One possibility is I did enable family sharing in the recent past, but I don't see why that would affect things.

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Answer 3

Jun 7, 2017 11:11 PM in response to dsits

I found a solution to this issue that worked for me.

I had some calendars that had the error {"reason":"Invalid or missing Origin header","error":1} and some that didn't. Then I noticed that the ones that I could download without any trouble started with webcal://p05- while those that had the error started with webcal://p45-. So I simply unticked Public Calendar and clicked OK before selecting the calendar again and ticking Public Calendar. If that generates a URL starting with webcal://p45-, copy it to the browser and try downloading it, if not, try again until you get the right URL.

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Answer 4

zinacef

Level 10

89,082 points

May 24, 2017 11:53 AM in response to dsits

I'm wondering if it may have anything to do with the implementation of two-factor authentication on all accounts? Do you know if it's enabled on your account?

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