How to fix
Ticketmaster error code U521
on Windows

Hello. I tried to purchase tickets from Ticketmaster but I got the U521 error code repeatedly. Any way to fix this?

When using Ticketmaster, users have occasionally seen the error code U521, which is not unusual. Ticketmaster, a widely used service for procuring and reselling tickets to various events such as concerts and sports, provides a seamless experience for users. On the other hand, some customers have expressed annoyance with the appearance of error code U521 during transactions.

Usually, this specific problem occurs throughout the purchasing process and forces users to try their transaction again. Although the first reaction could be to try the purchase once more, the U521 error's persistence could indicate more serious problems. One possible reason is that another user might try to reserve the same seat at the same time, which could cause a conflict in the transaction process. Another possible source of the U521 error has been found to be technical issues with the payment system.

The consequences of running into the U521 error are significant, particularly for those who are keen to get tickets for events that are in high demand. Missed opportunities to secure desired seats can arise from the irritation of having to keep trying to make the purchase only to be met with the same error over and over again. Furthermore, users may become less satisfied if it is unclear how to resolve the problem due to the lack of information surrounding the precise reason for the error.

Potential fixes for the U521 error must be carefully considered. While the error prompt initially advises retrying the transaction, users might find it helpful to look into other seats. There are 4 steps in this guide that should assist you in fixing Ticketmaster error code U521.

If you are on Windows, you can also use a maintenance tool like [d1] that can fix most system errors, BSODs, corrupted files, registry issues, or clear cookies and cache automatically. Otherwise, follow the step-by-step instructions below.

Method 1. Use a Different Payment Method

• Open the Ticketmaster app or visit the Ticketmaster website.
• Choose your ticket and click Next.
• Scroll down to Payments and select Back to Stored Cards. Click on PayPal under Or Pay With.

• Sign in to your PayPal account. Add your card to PayPal if you haven’t already.
• Once everything is selected, click Agree & Continue.
• Check if you can purchase tickets without getting the U521 error.

Method 2. Re-Login into Ticketmaster

• Click on My Account.
• Select Sign Out.
• Afterward, log in again and continue your purchase.

Method 3. Clear Browser Cache

App:

• Go to Settings > Apps.
• Select Manage Apps.
• Find and tap on Ticketmaster.
• Tap on Clear Data.
• Select Clear Cache.

Google Chrome:

• Open Chrome and select the three-dot menu in the top right corner.
• Click More tools.
• Select Clear browsing data. Choose the time range at the top.
• Select Cookies and other site data along with Cached images and files.
• Click Clear Data.

Method 4. Reinstall the Ticketmaster App

• Go to Settings > Apps.
• Select Manage Apps.
• Find Ticketmaster and select Uninstall.

• Now reinstall the app from the Play Store or the Apple App Store and log in to your account again.
• Once done, check if you can make the purchase now.