Weird browser tabs "KDE PIM Authorization"

Help
,
1

Lately, whenever my KDE Plasma laptop establishes a new network connection, a new tab is opened in my browser that says “You can close the browser window now and return to the application.” The title says “KDE PIM Authorization.”

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It’s just a minor nuisance, but I would like to know what causes this and maybe how to get rid of it.

Obviously it must have something to do with KDE PIM. My system is connected to a Nextcloud instance and synchronizes calendar events and contacts, but has been doing so for a number of years without opening these internal server pages.

Would anybody have any idea what’s going on?

Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.8-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
2

After watching my ports with

#! /usr/bin/fish
while true; ss -tulnp >> network_log.txt; sleep 1; end

I get this:

tcp   LISTEN 0      50         127.0.0.1:44751      0.0.0.0:*    users:(("akonadi_imap_re",pid=4323,fd=23))

Evidently an IMAP account that caused this. I tracked this to an Exchange mail account that I had configured a long time ago but totally forgotten about; found it using the Akonadi Console utility program. Don’t know why it only started opening those browser tabs right now, but at least it has stopped now that I have deactivated the Exchange account.