Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Moderators: Max, TerryRogers
-
- Experienced
- Posts: 41
- Joined: Sat Jan 23, 2021 12:28 pm
- Has thanked: 1 time
- Been thanked: 4 times
Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Hi,
I am experiencing an HTTP/1.1.412 Precondition Failed error while synchronizing my iCloud. It all works fine as long as Calendar sync is disabled but if I enable it, then I get the error.
Please note that it's set to one way (iCloud -> Epim).
Can you please help?
Thank you
Details:
Epim pro 11.7
Windows 11
I am experiencing an HTTP/1.1.412 Precondition Failed error while synchronizing my iCloud. It all works fine as long as Calendar sync is disabled but if I enable it, then I get the error.
Please note that it's set to one way (iCloud -> Epim).
Can you please help?
Thank you
Details:
Epim pro 11.7
Windows 11
Last edited by Rasna on Tue Sep 12, 2023 11:21 am, edited 1 time in total.
-
- Experienced
- Posts: 41
- Joined: Sat Jan 23, 2021 12:28 pm
- Has thanked: 1 time
- Been thanked: 4 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Adding another detail. In the sync window I can see:
"Unexpected: Logic error, line starts with a command reference (like C41) but nothing else, why was an exception not thrown earlier? Offending line..."
"Unexpected: Logic error, line starts with a command reference (like C41) but nothing else, why was an exception not thrown earlier? Offending line..."
-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Please forward the sync log file to us. You can find it by going to Tools->Options, selecting "Logs Folder", and looking for the file that begins with "iCloud". Thank you!
Android version of EssentialPIM. Keep all your data in sync!
-
- Experienced
- Posts: 41
- Joined: Sat Jan 23, 2021 12:28 pm
- Has thanked: 1 time
- Been thanked: 4 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Hello, there is no iCloud file in the log folder (files sorted by modification date):
please note that I have 2 synchronizations: Outlook and iCloud.

please note that I have 2 synchronizations: Outlook and iCloud.

-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
The latest file with "CalDAVSync" in its name is the one we need. Thank you!
Android version of EssentialPIM. Keep all your data in sync!
-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Thank you, will check the logs out and let you know if we need any additional info.
Android version of EssentialPIM. Keep all your data in sync!
-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
The issue should be resolved in the following build: https://www.essentialpim.com/download/t ... Pro117.exe
This build incorporates numerous changes that will be included in the upcoming release of EssentialPIM version 11.7.1.
Please go ahead and download and install this version. We would greatly appreciate it if you could provide us with feedback on how the software is now performing for you. Thank you!
This build incorporates numerous changes that will be included in the upcoming release of EssentialPIM version 11.7.1.
Please go ahead and download and install this version. We would greatly appreciate it if you could provide us with feedback on how the software is now performing for you. Thank you!
Android version of EssentialPIM. Keep all your data in sync!
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
I unfortunatelly am facing exactly the same problem. Using the new build didnt hekp at all.
Also by deleting the sync in the app settings, so that I could set up the sync again,
all my calender data dissapeared !
I would really love to get an immediate solution.
Also by deleting the sync in the app settings, so that I could set up the sync again,
all my calender data dissapeared !
I would really love to get an immediate solution.
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
There was one proposed, but it does not solve the problem!
-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Could you please provide me with the updated log files?
Android version of EssentialPIM. Keep all your data in sync!
-
- Site Admin
- Posts: 17168
- Joined: Thu Nov 25, 2004 3:12 am
- Has thanked: 1616 times
- Been thanked: 1135 times
Re: Epim 11.7 iCloud Sync HTTP/1.1.412 Precondition Failed
Thank you, although it seems you forgot to send me the log file via PM.
Android version of EssentialPIM. Keep all your data in sync!