# Troubleshooting AWS Client VPN: Unable to resolve the Client VPN endpoint DNS name
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**Problem**  
I am unable to resolve the Client VPN endpoint's DNS name.

**Cause**  
The Client VPN endpoint configuration file includes a parameter called `remote-random-hostname`. This parameter forces the client to prepend a random string to the DNS name to prevent DNS caching. Some clients do not recognize this parameter and therefore, they do not prepend the required random string to the DNS name.

**Solution**  
Open the Client VPN endpoint configuration file using your preferred text editor. Locate the line that specifies the Client VPN endpoint DNS name, and prepend a random string to it so that the format is *random\$1string.displayed\$1DNS\$1name*. For example:
+ Original DNS name: `cvpn-endpoint-0102bc4c2eEXAMPLE.clientvpn.us-west-2.amazonaws.com`
+ Modified DNS name: `asdfa.cvpn-endpoint-0102bc4c2eEXAMPLE.clientvpn.us-west-2.amazonaws.com`