Login Failure With iOS 18.4

 Problem

Affected Versions: PeopleSync Frontend version < 24.11.5

When connecting to PeopleSync with a username containing an “@” from an iOS 18.4 device, the login fails.

The frontend log shows a message similar to the following:

Failed to authenticate: john.doe%40example.com

It is possible that MDM-managed devices are not affected.

 Solution

This is caused by a change in iOS 18.4. In this iOS version, special characters in the username are URL-encoded. This wasn’t the case in older versions of iOS.

We have provided a fix for this issue. Please update to version PeopleSync Backend 24.11.13.1637 / Frontend 24.11.5. You can download it here: https://www.messageconcept.com/downloads/peoplesync/PeopleSync_Setup.zip

Further details: iOS 18.4 / iPadOS 18.4 breaks CardDAV / CalDAV - MacOS 15.4 works, iOS 18.3 and iPadOS 18.3 also works

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