If you’ve attempted to buy tickets for a concert or event on Ticketmaster and encountered the Error Code u521, you are not alone. This error usually shows up when there’s a problem with your internet connection or when Ticketmaster’s servers are dealing with heavy traffic. It’s a pretty common issue that lots of Ticketmaster users come across, so there’s no need to be concerned about it.
This article discusses various reasons that might be causing the Ticketmaster error code u521 and a few ways to fix the issue.
What causes error code u521?
Various reasons might cause the Ticketmaster error code u521, and they are mentioned below:
- Poor internet connection.
- Server outage.
- Temporary glitches.
- Corrupted browser cache and cookies.
- Interference by ad blocker.
- Issues with the browser.
Also read: Fix: Error code U219 Ticketmaster
How to fix the issue?
Here are a few ways to help you fix the Ticketmaster error code u521:
Check the internet connection
The first and most basic step to troubleshoot Error Code U521 is to ensure your internet connection is stable. If your connection is weak or intermittent, it can disrupt the ticket-purchasing process. Disconnect and reconnect to the WiFi and, if possible, reboot your WiFi router. Once you’ve done this, try accessing Ticketmaster again. If the issue persists, move on to the next step.

Check the server status
Server outages are among the most common causes of the Ticketmaster error code u521. Check Ticketmaster’s official social media channels or website for announcements about widespread outages or technical issues. They may provide updates on when the issue will be resolved. You can also use websites like downdetector to check the status.
Restart the device
An often overlooked but effective method is to restart your device. Sometimes, issues like Error Code U521 can be caused by temporary glitches in your device’s operating system. A simple restart can clear these issues.
Also read: What is “org.codeaurora.snapcam”?
Clear browser cache and cookies
Sometimes, the stored browser cache and cookies can cause issues with the browser’s functionality and cause issues like Ticketmaster error code u521. Clear the browser cache and cookies to resolve the issue.
Check out our article to learn how to clear your browser cache
Check out our article to learn how to clear your browser cookies
Disable adblocker
First, use the incognito mode to check whether the Ticketmaster is working normally on incognito; if it does, then it means the cause for this error is an ad blocker or any other extension. To disable ad blockers or other extensions, follow the steps below:
Step 1: Click on the Triple-dot menu. In the dropdown menu, hover over Extensions and then click Manage Extensions.

Step 2: Now, turn the toggle off beside the extension you want to disable.

Try another browser
Sometimes, browser-specific issues can cause Error Code U521. If you’ve been using one browser and encountering the error, switch to a different one. For example, if you’ve been using Chrome, try accessing Ticketmaster on Firefox or Safari. This simple step can often bypass browser-related problems.
Also read: How to fix Ticketmaster error code 0011?