Proxy server errors can occur for a variety of reasons. You may try one or more of the following activities in case you encounter this error:

• If you have an antivirus, it may be interfering with the Tor service. Disable the antivirus and restart the browser.
• You should not move the Tor Browser folder from its original location to a different location. If you did this, revert the change.
• You should also check the port that you are connecting with. Try a different port from the one currently in use, such as 9050 or 9150.
• When all else fails, reinstall the browser. This time, make sure to install Tor Browser in a new directory, not over a previously installed browser.

If the error persists, please get in touch with us.