Some PC users may encounter the Error Code 103033 when trying to join a Zoom meeting on their Windows 11 or Windows 10 computers. This post provides the most suitable solutions affected Zoom users can apply to successfully resolve this issue on their system.

An unknown error occurred, Error Code: 103033

When this Zoom error occurs, it usually means that email has been denied by the webinar host. Depending on a Zoom meeting’s security settings, this error can occur due to one or more of the following reasons:

• The user’s email account has been blacklisted by the webinar host.
• The user’s email account has not been whitelisted by the webinar host.
• The user is not logged into an account (attempted to join a meeting that requires users to be registered).

In a nutshell, the error in view indicates that the host of the webinar or meeting has denied your email access to the meeting. The issue can arise due to certain bugs with the application. Similarly, if the host skipped the email during registration in a webinar that requires prior email registration, the error will most likely be triggered on your PC.

Fix Zoom Error Code 103033

If you have encountered the Zoom Error Code 103033 on your Windows 11/10 PC, you can try our recommended solutions below in no particular order and see if that helps to resolve the issue on your device.

1. Check PC internet connectivity
2. Contact Webinar host
3. Reinstall Zoom
4. Contact Zoom Support

Let’s take a look at the description of the process involved concerning each of the listed solutions.

This issue may occur from Zoom’s end – it can happen because of the server down or other internal bugs. So, before you proceed with the solutions below, check whether the issue is happening because of Zoom internal issue by checking if the website/server is down. If this is the case, there’s nothing much you can do at your end but to wait for the servers to be back online when Zoom’s technical team resolves the issue.

In addition, we recommend you enable Zoom auto-update and make sure Zoom app is updated. Launch the Zoom app. Click on your profile icon on the top right side of the screen and select the Check for updates option) on your PC.

You might want to also ensure that the Zoom app is allowed through Windows Firewall.

1] Check PC internet connectivity

This solution to the Zoom Error Code 103033 on your Windows 11/10 PC follows if the Zoom servers are up and running but the error isn’t fixed on your system – then it’s likely you’re experiencing PC internet connectivity issues. In this case, to resolve the issue, you can use the Network Reset feature and you can run the inbuilt Internet Connections Troubleshooter and see if that helps.

2] Contact Webinar host

This solution requires contacting the host of the webinar and making sure they’ve whitelisted the user account the user is trying to use. If a user hasn’t created a Zoom account, they should do so and then provide the email used to the meeting host. After the host whitelists the email, the user should be able to join the meeting as usual. On the other hand, if the email has been ignored or not registered for a specific webinar or meeting, register the email first.

If the issue isn’t with the email as described above, as a possible workaround, you can click the Join from browser button on the error prompt and see if you can successfully join the meeting.

3] Reinstall Zoom

If Zoom is installed incorrectly or if its files are corrupted, this error can occur on your system. In this case, to resolve the issue, you can reinstall Zoom on your system.

You can uninstall Zoom via the Settings app or via the Programs and Features applet in Control Panel, reboot the PC, and then download and reinstall the latest version of Zoom client on your PC.

4] Contact Zoom Support

At this point, if none of the solutions in this post has worked for you and If the meeting host is unable to find a solution to your problem, you should contact Zoom’s official support at support.zoom.us/hc/en-us and see if they can be of help in resolving the issue in hand.

Hope this post helps you!

Related post: Fix Zoom Black Screen problem during Joining or Screen Sharing

How do I fix error code in Zoom?

Third-party security software like AVG may be blocking your connection to Zoom – you can disable the AV software and try again. Also, check with your Internet Service Provider to be sure you can connect to the Zoom service. If you are on a network with a firewall or a proxy, contact a network administrator to check your firewall and proxy settings.

Why I cannot connect to Zoom?

If the Zoom app is stuck in the “connecting” mode or has timed out due to a network error and can’t connect to the Zoom service, you can check your network connection and try again. This issue could be related to your network connection, network firewall settings, or web security gateway settings.