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How to fix Slack installation error on PC

In this guide, we’ll show you how to fix Slack installation error on PC by giving you a list of useful troubleshooting steps.

It’s easy and won’t take more than a couple of minutes to install Slack on your computer. Unexpected things can happen that can slow down or stop the process completely.

How to fix Slack installation error on Windows 10

1. Stop all background tasks

Installation files may not be able to be downloaded or installed if there are other program running on your computer at the same time.

  1. Start Task Manager, click on the Processes tab.
  2. Right-click on the program you want to close.
  3. Then click End Task.
  4. Install Slack again and see what happens.

2. Clear previous Slack installation files

3. Turn off your anti-virus software and firewall.

Sometimes, your security software might mark Slack installation files as suspicious when it shouldn’t. To avoid this, make sure you only download the app from reliable places, like the official Slack website. If you get the app from a third-party download site, it may also have PUPs or adware code sequences that you don’t want. This is why you should always download Slack from the official site and never from a third-party site.

Then turn off your antivirus software and firewall and see if you can install the app. After installing Slack, don’t forget to turn on your security software again. Also, if you use a VPN, you should turn it off when you install new programs.

4. Set up Slack in Compatibility Mode

Many users have confirmed that installing Slack in Compatibility Mode fixed the problem.

  1. Right-click the file that you want to install and choose Properties.
  2. Then click the tab that says “Compatibility.”
  3. Go to the “Run this program in compatibility mode” section and choose the previous OS version (Windows 8 or Windows 7).
  4. Start the process of installing Slack and see if your computer can do it.
  5. If the problem keeps happening, make sure that the installer is being run as an administrator.
  6. Go back to the Compatibility tab, check the box next to Run as administrator.

5. Tweak app installer settings

Check the settings for your app installer to make sure that your computer can install apps from places other than the Microsoft Store.

  1. Go to Settings, then Apps, and then Apps & features.
  2. Go to Choose where to get apps and click on it. Make sure that this option is not set to Microsoft Store Only (Recommended) by using the dropdown menu.
  3. If so, change it to Anywhere, but warn me before installing an app that’s not from the Microsoft Store
  4. Try to install Slack once more.

6. Restart the service that runs Windows Installer

  1. By pressing Windows + R, you can open a new window called “Run.”
  2. In the Run box, type services.msc and press Enter.
  3. Move down until you find Windows Installer Service. Check to see if the service is working.

Alternatively, you can right-click the Windows Installer service, click “Stop,” and then click “Restart.”

Then, right-click the service again, choose Properties, and change the startup type to Automatic. See if you can still install Slack.

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Conclusion

If you can’t install Slack on Windows 10, it’s because the installation files are being blocked by something. This could be your antivirus, firewall, app installer settings, or other programs that are running in the background. Follow this list of things to do, and then try to install Slack again. Did these ways to fix the problem work? Tell us in the comments section below.

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