Troubleshooting Guide for “Failed to fetch” Error on DoubleTick Login
The "Failed to fetch" error usually indicates that your browser or device is unable to communicate with DoubleTick servers. This is commonly caused by network/firewall restrictions, VPN interference, or browser-related issues.
Here’s a step-by-step guide to help you resolve it:
✅ 1. Whitelist Required Domains
Ensure the following domains are not being blocked by your firewall, antivirus, network proxy, or VPN:
https://api.doubletickapi.com/
https://ad-insight.doubletick.io/
https://securetoken.googleapis.com/
https://identitytoolkit.googleapis.com/
➕ Actions:
Ask your IT team to allowlist these URLs.
Make sure ports 443 (HTTPS) and 80 (HTTP) are open.
If you use SSL inspection or DPI (Deep Packet Inspection), disable it for the above domains.
✅ 2. Check Your Internet Network
If you're on a corporate or restricted Wi-Fi, try:
Switching to a mobile hotspot or open network.
Turning off VPN if active.
Checking if other team members can access https://web.doubletick.io
✅ 3. Clear Browser Cache and Cookies
Corrupted browser data may block key scripts from loading.
➕ Steps:
Go to browser settings → Privacy & Security → Clear browsing data
Select Cookies and Cached Files
Refresh the DoubleTick login page or restart your browser
✅ 4. Try an Incognito Window or Different Browser
Sometimes browser extensions or cache can interfere.
➕ Actions:
Open incognito/private mode and try logging in
Use another browser (Chrome, Firefox, Edge)
Ensure JavaScript is enabled
✅ 5. Ensure Correct Time & Date on Your Device
An incorrect system time can block secure connections.
➕ Actions:
Open your device settings
Set the time and date to automatic or sync with internet
Refresh and retry
✅ 6. Disable Antivirus or Firewall Temporarily (If Safe)
Security tools like Kaspersky, Norton, or enterprise software may silently block background scripts.
➕ Actions:
Disable antivirus/firewall temporarily and try logging in
If successful, add the DoubleTick URLs to the tool’s safe list
Reactivate your protection after testing
✅ 7. Device-Specific Troubleshooting
If you’re on iOS or Android, try updating your browser
Restart your phone or switch networks
Ensure app permissions are granted
✅ 8. Check Browser Console for Errors (Advanced)
To get technical logs:
Open Chrome
Right-click → Inspect → Go to Console tab
Refresh the page and note any red error messages
You can send screenshots of these errors to [email protected] for further help.
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