Department of Property Taxation Frequently Asked Questions

The following are frequently asked questions regarding this application.  If you are encountering issues with the system, please review these questions and answers first to see if your question has been answered.  If this information does not answer your question or you continue to have problems with the application, please contact us by email at or by phone at 303 864-7765.

General Troubleshooting Tips:

  • Ensure that there is only one Java icon in your system tray by closing all other browser tabs and browser instances when you are accessing the Certification of Levies application.
  • Try clearing the Java cache. Please note that this will require the application to again transfer the JAR files to your computer. To clear the cache:
    • Go to the Control Panel.
    • Double-click the "Java" control.
    • Click on the "General" tab.
    • Click the "Settings" button in the "Temporary Internet Files" section. Please verify that the amount of disk space is at least 50 MB. Then click the "Delete Files" button to clear the cache.
    • A dialog box will be displayed, asking which temporary files should be deleted. Be sure both boxes are checked, then click the OK button to finish.
  • The process may take a few moments, depending on how many files are cached.
    • If you are using MS Internet Explorer version 6, check that permissions and security options are set correctly: In particular, Java permissions must be set correctly.
    • Make sure that "Run Unsigned Content" and "Run Signed Content" are enabled (Security tab of Internet Options).
    • Make sure that the Java console is enabled (Advanced tab of Internet Options).
    • Make sure that your proxy settings are correct for your network. (Connections tab of Internet Options).