[GH-ISSUE #448] Out of nowhere: Response status code does not indicate success: '400' ('Bad Request') #1298

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opened 2026-03-14 00:56:50 +03:00 by kerem · 2 comments

kerem commented

2026-03-14 00:56:50 +03:00

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Originally created by @jkcaec on GitHub (Feb 20, 2025).
Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/448

Hello! I'm hoping I can get some help. After at least 2.5 years of use, out of nowhere caldav just started throwing this error (See the "Raw" and "Exception that lead to abortion" text files for the full error messages. If there are other error messages, I don't know where to find them, but would happily supply if I did.). I've restarted a couple times but it continues to occur. The error occurs every 30 minutes. It still appears to sync from Outlook to my gmail account, but it keeps popping up. As I use this for work, I can't have it popping up during a presentation. Any help would be greatly appreciated.

Win 10 Pro (up to date), Dell laptop Latitude 3510, 64-bit operating system. No issues on hd space as there are 51.3 GB open.

Exception that lead to abortion.txt
Raw error.txt

Thanks for any help you give!

Originally created by @jkcaec on GitHub (Feb 20, 2025). Original GitHub issue: https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/448 Hello! I'm hoping I can get some help. After at least 2.5 years of use, out of nowhere caldav just started throwing this error (See the "Raw" and "Exception that lead to abortion" text files for the full error messages. If there are other error messages, I don't know where to find them, but would happily supply if I did.). I've restarted a couple times but it continues to occur. The error occurs every 30 minutes. It still appears to sync from Outlook to my gmail account, but it keeps popping up. As I use this for work, I can't have it popping up during a presentation. Any help would be greatly appreciated. Win 10 Pro (up to date), Dell laptop Latitude 3510, 64-bit operating system. No issues on hd space as there are 51.3 GB open. [Exception that lead to abortion.txt](https://github.com/user-attachments/files/18892257/Exception.that.lead.to.abortion.txt) [Raw error.txt](https://github.com/user-attachments/files/18892256/Raw.error.txt) Thanks for any help you give!

kerem commented

2026-03-14 00:56:56 +03:00

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@msceex commented on GitHub (Mar 19, 2025):

@msceex commented on GitHub (Mar 19, 2025): Maybe related https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/420 ?

kerem commented

2026-03-14 00:57:01 +03:00

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@rubaboo commented on GitHub (May 14, 2025):

See my solution in #437.

@rubaboo commented on GitHub (May 14, 2025): See my solution in [#437](https://github.com/aluxnimm/outlookcaldavsynchronizer/issues/437#issuecomment-2881852132).