How to Fix Zoom Error 3003

When a new co-host is added to a meeting, a special link is created exclusively for them. If this link is shared with participants who aren’t co-hosts, it results in Zoom error 3003, signaling that the invitation doesn’t originate from a host.

Before troubleshooting this problem, remember that you can’t join a concluded or yet-to-start meeting, conference, or webinar as the link would be expired or inactive, resulting in error 3003. Verify that the host or co-host has started the meeting.

If the meeting has started, you can request a meeting link from the host or ask the co-host for a standard participant link to join the meeting.

1. Update Your Zoom Client to Resolve Compatibility Issues

If your Zoom client or browser is outdated, it can lead to compatibility issues with the app servers, potentially causing error 3003. To resolve this problem, update your Zoom client or browser.

To update the Zoom client:

1. Launch the Zoom app and click on your profile.
2. Check for updates and install them if available.

   

3. Restart the device and check if you can join the meeting without encountering error 3003.

2. Correcting the Meeting Link Format

A simple tweak to the meeting link can sometimes resolve Error 3003:

http://iu.zoom.us/meeting/123456789

Replace the “/meeting/” with “/j/” in the link.

http://iu.zoom.us/j/123456789

Use this link to join the meeting and see if the error clears.

3. Use Another Device or Network

Device or network issues can sometimes cause Error 3003. Try joining the meeting from a different device or network to see if the issue is resolved.

4. Check Scheduling Privileges

If scheduling privileges were modified after sending the invitation, it could cause error 3003. In this case, verify the scheduling privileges to confirm.

1. Open the Zoom portal and go to Settings > Meeting > Other > Schedule Privilege.

   

2. Check if there is a recent change in the privileges. If so, revert it. 
3. You can also add a new user for managing private events.

5. Create a Zoom Co-host 

If a person is failing to join a meeting you are hosting due to error 3003, you can make that person a co-host to clear the error.

1. Open the Zoom web portal and navigate to My Meeting Settings
2. Select Co-host and enable it.

   

Once the co-host feature is enabled, there are two ways to make a participant a co-host.

By Using the User Profile: Hover over the user’s profile and select More. Click on Make Co-Host.

By Using the Participants’ Window: Open the participants’ window and go to Manage Participants. Select the required contact and open More. Click on Make Co-host.

6. Request to Initiate a New Meeting

If the meeting configurations are invalid, participation will not be possible, resulting in error 3003. You can request the host to initiate a new meeting and share its link. Alternatively, if practical, you could host a new meeting, adding all necessary participants.

7. Reinstall the Zoom App

If the above solutions don’t resolve the issue, you can reinstall the Zoom app to fix error 3003. Here’s how you can do this on Windows:

1. Rigt-click on Windows and select Apps & Features. 
2. Expand the options for Zoom, and click on Uninstall. 
3. Confirm to uninstall Zoom and follow the prompts to complete the process. 
4. Once done, restart the system, and go to the Zoom website. 
5. Download the latest Zoom client and launch it.
6. Follow the prompts to install the client and once done, launch the Zoom client. 
7. Log in using your credentials and see if the error 3003 is cleared.

If reinstalling fails, you may use Zoom on another device on another network. If you are using a browser, you may use another browser and check if that clears the error. 

If this does not work, you can contact Zoom Support for further troubleshooting. If there is a query or suggestion, contact us in the comments.