On January 12, 2022, Mozilla released the updated version 96.0 of the Firefox browser. This causes a log-in error with ipernity. But obviously this is not only an ipernity problem: www.ghacks.net/2022/01/13/some-firefox-users-report-connection-issues-workaround-inside

As an interim solution, you can use Chrome, Opera or other browsers. If you prefer to overcome the log-in problem with Firefox, you can use the following workaround, which was published by Boarischa Krautmo :

♦ Type about:config in the Firefox address bar.
♦ Press the [enter]-key.
♦ Click onto: Accept risk and continue (It's not risky!).
♦ Type samesite into the search bar which opens.
♦ Set all flags to false as shown below (use the toggle on the right edge of each line)

♦ Close Firefox.
♦ Start Firefox again.
♦ Open ipernity.
♦ Login as usual.

This procedure has been tested by several ipernity members and works perfectly.

Nevertheless, we are of course trying to find a solution that makes this approach obsolete.

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edit Jan 14: Newest version 96.0.1 no longer causes any login problem.