If the Slack connection issues persist, go back to Internet options, click on the Advanced tab, and hit the Reset option.

Click on the Connections tab and select LAN Settings.

Type internet options in the Windows Search bar and double-click the first result.

If you’re using any of these programs, whitelist Slack or temporarily disable them. On a side note, the company confirmed the following programs can interfere with Slack connections: Avira Browser Safety, Browser Guard, Pokki, Smart Panel, spyware and adware, Visual Discovery by Superfish, Avast, McAfee, Norton, AVG, and AdBlock Plus. Disable your antivirus, firewall, and VPN (if you’re using one). The same is valid for your proxy settings and VPN. Your antivirus and firewall might be interfering with Slack blocking your connection request.

Additionally, disconnect other devices using the connection to free up more bandwidth for Slack.

If possible, switch to a cable connection or use a mobile hotspot and check the results.

Wireless connections are more convenient, but they’re less stable compared to cable connections.

First, restart your router or unplug the device if you haven’t done that in a long time.

Here’s what you can do to improve your network connection:

Make sure your connection is stable, and you’re not experiencing any bandwidth issues. Then click on your Slack desktop app menu, select Help, and Check for updates. To update Windows 10, go to Settings, select Update and Security, go to Windows Update and check for updates. Equally important, update your app and OS.

Additionally, run the Slack connection test and contact your network admin if you get any errors.

Go to and check if there are any known issues or notes about scheduled maintenance tasks.

In this guide, we’ll explore how you can quickly troubleshoot them and regain access to your workspaces. More specifically, connection and login issues are some of the most common glitches affecting Slack.

Slack application windows