The error "Unable to resolve target system name" in tracert is often caused by an invalid or unreachable hostname or domain name. Here is how to verify and troubleshoot the issue.

Check the Hostname/Domain Name Format

  • Correct Format: Ensure the domain name is in the proper format without prefixes like http:// or https://.
  • Example:
    • tracert example.com
  • Incorrect Format:
    • tracert http://example.com

Ping the Domain

Use the ping command to test if the hostname or domain name resolves to an IP address.

ping example.com

Expected Output: If the domain resolves, you will see responses with the IP address.

Pinging example.com [93.184.216.34] with 32 bytes of data:
Reply from 93.184.216.34: bytes=32 time=12ms TTL=57

If Ping Fails: The hostname cannot be resolved. Proceed with further troubleshooting.

Use nslookup to Check DNS Resolution

Run the nslookup command to check if the domain resolves to an IP address.

nslookup example.com

Expected Output:

Server: dns.google
Address: 8.8.8.8

Non-authoritative answer:
Name: example.com
Address: 93.184.216.34

If nslookup Fails: The domain name may not exist, or there may be an issue with your DNS server.

Verify the Domain Status

Check if the domain is valid, active, and registered using an online WHOIS lookup tool:

Search for the domain to confirm:

  • It is registered and active.
  • Its DNS records are properly configured.

Use an Online DNS Checker

Use online DNS tools to verify the domain DNS resolution:

Enter the domain and check its A record (IPv4 address) globally.

Try with an IP Address

To rule out DNS issues, use an IP address instead of a hostname in the tracert command:

tracert 93.184.216.34

If the IP works but the hostname does not, the issue lies with DNS resolution.

Ensure Internet Connectivity

Check if your system has an active internet connection:

  • Open a browser and try accessing a known website, such as https://google.com.

Test with a Different DNS Server

If the issue persists, switch to a public DNS server like Google DNS or Cloudflare DNS.

How to Change DNS on Windows:

  1. Go to Control Panel > Network and Sharing Center > Change Adapter Settings.
  2. Right-click your active network connection and choose Properties.
  3. Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
  4. Enter the following DNS servers:
    • Google DNS: Preferred DNS: 8.8.8.8, Alternate DNS: 8.8.4.4
    • Cloudflare DNS: Preferred DNS: 1.1.1.1, Alternate DNS: 1.0.0.1

Common Scenarios and Fixes

Scenario Command Fix
Typo in the domain name tracert exapmle.com Correct to tracert example.com.
DNS resolution issue ping example.com fails Switch to a public DNS server.
Domain is expired nslookup example.com fails Verify the domain status in WHOIS.
DNS misconfiguration DNS records are missing Check and update DNS settings for domain.

Example Outputs and What They Mean

  1. Successful Resolution:
    2. Pinging example.com [93.184.216.34] with 32 bytes of data:
    Reply from 93.184.216.34: bytes=32 time=12ms TTL=57

    The domain is valid, and DNS is resolving correctly.

  2. Failure to Resolve:
    3. Ping request could not find host example.com. Please check the name and try again.

    Indicates DNS resolution failure. Check your DNS settings or verify the domain existence.

By following these steps, you should be able to resolve the "Unable to resolve target system name" error in tracert.