Application adds itself as default open action

[omano]

This is a follow up to this thread:

qBittorrent associates itself to all file formats

qBittorrent (qbittorrent 4.3.3-1 installed from the community repo) is associating itself to all file types. I had reported this issue to qBittorrent’s GitHub but it seems that it’s happening only to me. In the file association MIME type for the launcher, the only type is listed as application/x-bittorrent but it’s showing up for every filetype when in the File Associations settings and also using “open with” in Dolphin. Please help me out. inxi -Fazy System: Kernel: 5.11.6-1-MANJARO x86_64…

as it is now closed I can’t reply to it, but I want the information to be available.

Today Ark was the default program to open most text documents on my system, which makes absolutely no sense, the same when qbittorent was also the default program to open all text files long time ago.

The problem is that for whatever reason (I think this happened after I selected Ark in Firefox to open a .zstd file, which it can not by the way, but this is off topic), Ark was added in the file ~.config/mimeapps.list as the default/first application for application/octet-stream.

So the fix was simple, I removed it from the line (and left Kate as the default application there, you can simply remove all application there but for me it is more practical to have Kate there).

[Added Associations]
application/octet-stream=org.kde.kate.desktop;

So here you go, no more Ark as default for most of the files on the system. On the other thread user fixed it by removing the ~.config/mimeapps.list file but the real solution was to remove the problematic application from this line.