Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version (e.g., 29.x.x): 30.0.6
- Operating system and version (e.g., Ubuntu 24.04): macOS 15.3.1
- Web server and version (e.g, Apache 2.4.25):
unknown - Reverse proxy and version _(e.g. nginx 1.27.2) unknown
- PHP version (e.g, 8.3): unknown
- Is this the first time you’ve seen this error? (Yes / No): NO
- When did this problem seem to first start? about Dec 2024
- Installation method _(e.g. AlO, NCP, Bare Metal/Archive, etc.) unknown
- Are you using CloudfIare, mod_security, or similar? _(Yes / No) unknown
Summary of the issue you are facing:
When trying to connect the sync client (latest version, downloaded on 27.02.2025), the login is not “given back” from the browser to the sync client. The sync client keeps waiting saying “Please complete the log in process in your browser“ even though the login was already completed in the browser.
It seems to be the same issue as this one.
Steps to replicate it (hint: details matter!):
- Install sync client for macOS
- Enter Nextcloud URL
- Log in account in Safari
- Grant access to sync client
- Go back to sync client and you’ll see it’s still waiting even though
Log entries
unavailable