# Troubleshooting "Failed to validate certificate" error when launching IGV BaseSpace Application
Java will attempt to verify the Integrative Genomics Viewer (IGV) application prior to launching and can fail with the following error message:
Installing or Upgrading Java from the link provided on the IGV app page will not resolve the issue. Follow the workaround instructions below to circumvent this error message and launch the IGV app on BaseSpace.
**Add application URL to Java exception list :**
1. Go to the **Control Panel** from the Start menu.
2. Double-click on the **Java icon** to get the Java control panel dialog box.
3. Navigate to the **Security Tab**.
4. Click the '**Edit Site List**' button.
5. Click the **Add** button in the Exception Site List window.
6. Click in the empty field under **Location field** to enter this URL: [https://basespace-launch-east.s3.amazonaws.com](https://basespace-launch-east.s3.amazonaws.com/)
7. Click the **OK** button.
8. Go back to the Java Control Panel under the **Advanced tab**.
* There is a setting, “Perform signed code certificate revocation checks on”, which can be changed by clicking on “Do not check (not recommended)”. That will disable the revocation check and allow end users to log into the application.
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