Last week I found myself in a awful predicament. Slack.app for Mac would not open and would hang when trying to load a Team. I searched the Internet and then looked for the files that held the Slack Settings myself in all the usual places (~/Library/Preferences, ~/Library/Application Support, etc.). After not having any luck I even at one point tried App Zapper to see if it could find the settings folder … No Luck!
After not finding anything I had somewhat decided that the only thing to do was to contact support. Support didn’t help a lot and told me to go into the app and click Help -> Reset Local Cache. This is a great tip for most things but there was one problem. The app would not stay unfrozen long enough for me to click on Help -> Reset Local Cache.
I told the guy in support this was the case and didn’t hear back from him because of the long weekend. I finally ended up just creating another user profile and fixing the issue that way (which sucked but I was due a format / reinstall anyway so I went ahead and did that while I was at it).
Tuesday support finally got back to me and had a solution that does in fact work. That file that I couldn’t find is in fact located in ~/Library/Containers. So while this post doesn’t help me I thought maybe it might fix someone else’s problem(s) that wanted to reset their slack settings and could not. Simple go to the ~/Library/Containers folder and delete the com.tinyspeck.slackmacgap folder. This will reset your preferences and any Team Data you have in Slack. Hope this helps someone else.