Frequently Asked Questions

Why can't my application connect to a VPN server?

There are a number of things that can interfere with the client's ability to connect to a VPN server.

  1. If the client's IP geolocation is not in a supported country then its requests can be blocked by your runtime instance's Web Application Firewall. You can check your client's IP geolocation by using sites such as If you need to change the list of supported countries then please contact your account representative or send an email to

  2. Your antivirus and firewall settings can block the VPN connection. Please refer to the documentation for your antivirus and firewall software to ensure VPN connections are allowed.

  3. If you have other VPN software with an active VPN connection then it can interfere with the operation of Sudo Platform VPN SDK. Please ensure you do not have a different VPN enabled before attempt to connect to a VPN server via Sudo Platform VPN SDK.

Why are some websites unreachable with VPN connected?

If you can’t reach some websites, first try connecting to a different VPN server location. Some websites may restrict access from certain locations.

If you’re using Google services while connected to the VPN, you may sometimes receive an error message such as “We’re sorry, but your computer or network may be sending automated queries. To protect our users, we can’t process your request right now” or “Our system has detected unusual traffic from your computer network”. The error message will also typically display a reCAPTCHA. This error occurs because in a VPN infrastructure a pool of IP addresses are shared by multiple users in order to ensure users' anonymity. When Google detects unusually high traffic levels from the same IP address, it sometimes assumes requests are automated (e.g. from bots) as explained by the Google support article “Unusual traffic from your computer network.”. If you are experiencing such a issue, try the following steps:

  1. Complete the reCAPTCHA challenge to prove you’re human and not a robot. Google says the error should then go away and normal services will resume.

  2. If the problem continues, we recommend that you reconnect to the server to receive a new IP address, or try a different server.

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