Web browser vs In-App

Web Testing
1

My client is able to connect to testops.katalon.io with his web browser but fails to do the same with Katalon app.

We try both with or without proxy setting within the app, but he still fails to connect.

Any idea what might be missing?

2 Likes
2

Could you share the relevant snippet from the Katalon Error Log? You can find this under Help > Export Logs

3

hi @phuong.n.tran

it’s almost always an environment issue
browsers handle proxy/SSL automatically but the Katalon app doesn’t
check firewall/endpoint security, proxy auth (NTLM/Kerberos), and SSL inspection

Katalon logs usually show this as an SSL or proxy error.

4

Solutions

Solution 1: Verify and Configure Proxy Settings in Katalon App

Steps:

  1. In the Katalon app, go to the Sign in dialog box
  2. Click Proxy settings at the bottom
  3. Select Manual proxy configuration (if not already selected)
  4. Configure the following:
    • Proxy server type: HTTP (or HTTPS, depending on your setup)
    • Address: Enter your proxy server address
    • Port: Enter the proxy port number
    • Proxy server requires authentication: Check this box if your proxy requires credentials
    • Username & Password: Enter proxy credentials if needed
  5. Verify the License server address is set to: https://testops.katalon.io
  6. Click Save and try connecting again

Source: Katalon Documentation - Cannot connect to Katalon TestOps server (2)

Solution 2: Verify the Server URL

Steps:

  1. Check if the Server URL in the Katalon app is correctly set to: https://testops.katalon.io
  2. If it’s auto-filled with a different URL, replace it with the correct endpoint
  3. Try connecting again

Source: Katalon Documentation - Cannot connect to Katalon TestOps server (1)

Solution 3: Check Firewall/Network Whitelist

If your client is behind a corporate firewall or on-premises system, ensure these IP addresses are whitelisted:

  • 52.45.203.41
  • 52.203.34.201
  • 35.172.81.5

Source: Katalon Documentation - IP Addresses errors

Recommended Next Steps

  1. First, verify the proxy authentication settings are correctly configured in the Katalon app (Solution 1)
  2. Second, confirm the Server URL is exactly https://testops.katalon.io (Solution 2)
  3. Third, if behind a corporate network, have IT whitelist the IP addresses (Solution 3)
5

In Katalon Studio: Help > Proxy Settings (or during sign-in). Select Manual Config, enter host:port, username/password if authenticated. Whitelist *.katalon.com, testops.katalon.io (HTTPS/443), and analytics.katalon.com in corporate firewall/proxy.

If proxy intercepts SSL, export proxy’s CA certificate (.cer/.crt) and import via Help > SSL Certificates > Add in Studio. Restart app. Test with Project > Settings > Integration > Katalon TestOps > Fetch Projects

1 Like
6

If you have already purchased the license make sure that the KSE assigned to the member.

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1 Like
7

Thank you.

1 Like
8

According to my client, there is no error. I am just a firewall guy poking holes for him the go through. On the firewall, no SSL inspection/decryption configured. On the Katalon app, I remember options to specify proxy or no proxy. I am not sure which option my client should use.

1 Like
9

Not sure if solution 1 is possible as my client does not know his credentials. I can confirm URL was entered correctly (option 2), and firewall rules are in place (option 3)

10

thank you.

1 Like