I clicked a magnet link and Chrome gave me the popup saying "This site is trying to open an external app." I clicked the checkbox for it to never ask me again but I accidentally clicked the "Do Nothing" button. Now I can't seem to revert that decision.
As per this question, if I go to Settings > Content Settings (under Privacy) > "Manage Handlers..." nothing is listed. Right clicking a magnet link does not provide an "Open Link With..." option either. The question seems to be outdated.
22 Answers
After a little Googling, I found the answer.
Ensure Chrome is completely closed. No lingering extensions or icon in the system tray. Navigate to %LOCALAPPDATA%\Google\Chrome\User Data and there is a file named local state. Inside the file, look for protocol_handler and under that you'll find magnet: true, change it to false and save the file.
Following these instructions fixed my magnet problem.
3The answer above did not work for me. But this one worked: (dont upvote my answer but his)
1) Goto URL chrome://settings/clearBrowserData
2) Select duration "Past week".
3) Select only "Cookies and other site data"
4) Click "Clear Browsing Data" and browse site again.
