Slack signing you out unexpectedly can be frustrating, especially if it happens repeatedly. When you keep getting signed out, it interrupts your workflow and productivity.
Fortunately, there are several things you can try to troubleshoot and fix this issue. Here are the most common reasons Slack keeps signing you out and how to resolve them:
Table of Contents
Session Duration Settings
One of the most common reasons Slack keeps signing you out is due to session duration settings. Workspace owners and admins have the ability to set session durations to automatically sign users out after a set period of inactivity.
To check if this is enabled for your workspace:
- On desktop, click on your workspace name and go to
Tools & Settings > Workspace Settings > Authentication - Check if there is a session duration set under “Session Duration”
If there is a limit set that is too short, you may get frequently signed out. Ask your admin to extend the session duration or set to “Never” to remain signed in indefinitely.
Problems with Network Connection
Issues with your internet connection can also cause Slack to repeatedly sign you out.
To troubleshoot network problems:
- Check if you can load other websites and apps that require an internet connection
- Run a Slack connection test to diagnose issues
- Try connecting on your mobile data if Wi-Fi is the problem
- Reset your router and modem
If the problem persists on multiple networks, it likely isn’t on your end.
Global Sign Out from Slack
In rare cases, Slack may sign everyone out due to security concerns:
- This happened in 2015 and 2019 due to security breaches
- Slack will post updates on their status page
If this occurs, you’ll simply need to sign back in using your credentials.
Update to the Latest Version
Having an outdated version of Slack could also be the culprit.
To rule this out:
- On desktop, go to
Slack > Check for Updates - On mobile, update Slack through the App Store/Google Play Store
- See if the auto sign outs stop after updating
Bug fixes and security patches in newer versions may resolve sign out issues.
Clear Cache and App Data
Before reinstalling Slack as a last resort, try clearing cached files and app data:
On desktop:
- Click on workspace name >
Troubleshooting > Restart and Clear Cache - Restart Slack after cache clears
On Android:
- Go to device settings > Apps > Slack > Storage > Clear Cache and Clear Data
On iOS:
- Go to Settings > Slack > Reset Cache on Next Launch
With the app data wiped, reconnect and see if it stops the repeated sign outs.
Contact Slack Support
If you still get signed out of Slack after trying the above solutions, reach out to Slack’s support team. Provide details on when it happens, which devices, workspace name, and steps attempted.
Support can investigate further based on your workspace settings and account details. They can also check if there are any platform issues on Slack’s end causing the problem.
Prevent Future Sign Outs
Once you’ve resolved the sign out issues, here are some tips to avoid them again:
- Ask admins not to enable automatic session timeouts
- Add Slack website/app to firewall allowlist if needed
- Enable two-factor authentication for added security
- Log out properly when switching devices
- Keep Slack updated to latest version
Taking preventative measures can stop Slack from unexpectedly signing you out when you least want it to happen. Be proactive and periodically check settings to ensure uninterrupted access.
