The Windows app opens and loads Slack but then Slack freezes. Even the quit button doesn't work. I have to force-ably shut it down via the task manager. The Windows app's menu bar does work but some of its corresponding actions don't (like quit that just simply closes the window but does not shutdown slack). The slack website does work. I tried

  1. Uninstalling and reinstalling it on a Windows 10 x64
  2. Help > Reset App Data - this resets the app but once I login to my slack account, its frozen all over again.

It looks like the Slack frozen yet it still receives updates for channels. I just can't navigate to any other channel, type or scroll up/down in the current channel.


It seems its a bug that is affecting some Windows 10 users and most likely due to the Windows notifications. The temporary solution as per Slack support is

  1. Ensure that you're signed into at least one team.
  2. Completely quit out of Slack.
  3. Hit the Windows key and R to bring up the Run dialog.
  4. Type (or copy and paste) slack://notReallyWindows10 and hit Enter.

Or login to slack via the web browser.

  • Looked for a reference to this in Slack support and couldn't find it, but it is discussed here: reddit.com/r/Slack/comments/5847qa/… – Benj Nov 16 '16 at 17:03
  • @Benj By Slack support, I meant I actually contacted Slack support. I couldn't find anything in their documentation. – SILENT Nov 16 '16 at 22:18
  • Are you a member of the Windows Insider program, per chance? I know I started having this problem when I joined the program (and consequently got stuck in it). – coderpros Mar 2 '17 at 10:52
  • @coderpros I have Windows 7 Pro (purchased as a student) which upgraded to Windows 10 Pro. I don't believe I'm in the Insider Program. – SILENT Mar 2 '17 at 11:20
  • 1
    This didn't help in my case unfortunately. Crashed again on next notification. – janpio Dec 8 '17 at 16:30

Try the following: Menu > File > Preferences > Notifications, scroll down to "Deliver notifications via..." and change it to "Slack's built-in notifications". Restart Slack and the problem should be gone - helped in my case.

  • Noticed this super annoying bug also, just kept using @powershell kill -name slack to kill and restart, but figured I'd try this out instead. Seems to make sense as it freezes every time I get a message. No longer using "Windows Action Center", we'll see how it goes with built-in notices... – SliverNinja - MSFT Feb 14 '18 at 16:07

Try the following:

Help > Troubleshooting > Clear Cache and Restart

This has stopped it from freezing on me, at least for now. Hope this helps.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.