Troubleshooting Zoom Login Errors

Zoom is an excellent collaboration and remote work tool that powers millions of users daily. Taking into account Zoom’s importance in today’s remote-oriented work environment, it’s easy to understand why users dread logging problems.

All the stress and anxiety go through the roof if there are only a few minutes left until that important video conference starts and you’re still unable to log in.

Some of the most frequently encountered Zoom login errors are error 403, error 1044, error 100, and error 5003.

The good news is that you should be able to quickly troubleshoot Zoom login issues and errors with the help of this guide.

How To Fix Zoom Not Logging In Issues

1. Use a different device and check your credentials

As a quick workaround, if logging in on your computer doesn’t work, you can try to log in using your phone. Or, if you can’t log in via the desktop app, try logging in using your browser.

Needless to say, make sure you’re using the correct credentials and check for typos. Check your keyboard input settings in case you often switch between different languages.

Use the authentication information that’s been provided to you by your organization, don’t use any other type of authentication.

Also, ensure that you already set up your Zoom account correctly on your organization’s Vanity URL which should have this format https://youroganization.zoom.us.

2. Sign in with SSO

Another workaround is to use SSO (single sign-on) and log in using your organization’s credentials. For this method to work, you need a Business or Education account and a verified Vanity URL.

1. Launch Zoom and click on Sign in with SSO
2. Type your organization’s name in the Domain field → hit Continue
3. Enter your organization’s credentials and hopefully, you’ll be able to log in.

3. Check your connection and security settings

Not being able to log in to your Zoom account could be related to an unstable network connection or firewall and security settings blocking the program.

To make sure your Internet connection is working properly, restart your modem, get the latest router firmware updates, and switch to a cable connection if that’s possible given your current configuration.

Then, check your firewall and antivirus settings and ensure none of them is blocking Zoom or certain Zoom features.

To whitelist Zoom on Windows Security:

1. Open the Settings app and go to Update & Security 
2. Navigate to Windows Security and select Virus & threat protection
3. Click on Manage settings
4. Scroll down to Exclusions and select Add or remove exclusions
5. Add Zoom and try again.

To whitelist Zoom on Windows Firewall:

1. Go to Start, type firewall and open Firewall and Network Protection
2. Scroll down and click on Allow an app through firewall
3. Click on Change Settings, scroll down to Zoom and tick both the private and public checkboxes
4. Restart your computer, launch Zoom, and check if you can now log in.

If you’re using a third-party firewall and antivirus, go to your software’s support page for detailed instructions on how to whitelist Zoom.

4. Check if other programs are blocking Zoom login

Other programs might be interfering with Zoom. If this problem occurred shortly after you installed a new program on your computer, disable or uninstall the respective program and check if you can successfully log in to Zoom now.

You can also disable all background apps using the Task Manager or clean boot your computer to check if software interference is the cause of the problem.

1. Go to Start → type msconfig and double-click on System Configuration
2. Go to the Services tab → Hide all Microsoft services → Disable all
3. Click on the Startup → Open Task Manager
4. Select the items you want to disable on startup → hit the Disable button
5. Save the changes, close the Task Manager, reboot your computer, and test.

5. Reinstall Zoom

If certain Zoom files got corrupted or deleted, certain features might not be available. As a result, you can try to uninstall and reinstall Zoom in order to fix login issues.