Solution for Google colabe unable to connect runtime / Fail to fetch

[jay-p007]

so guys here is solution :
this is DNS resolution issue

2. Clear DNS Cache

Clearing your DNS cache can resolve DNS-related issues.

On Windows:

1. Open Command Prompt as an administrator.
2. Run the following command:

   ipconfig /flushdns
   

On macOS:

1. Open Terminal.
2. Run the following command:

   sudo killall -HUP mDNSResponder
   

On Linux:

1. Open Terminal.
2. Depending on your distribution, run:

   sudo systemctl restart network-manager
   

   or

   sudo service networking restart
   
   
   

3. Change DNS Server

Changing your DNS server to a public one like Google’s DNS or Cloudflare’s DNS can sometimes help.

Google’s DNS:

• Primary: 8.8.8.8
• Secondary: 8.8.4.4

Cloudflare’s DNS:

• Primary: 1.1.1.1
• Secondary: 1.0.0.1

4. Restart Your Router

Restarting your router can resolve network issues.

Example Commands for DNS Change on Windows

1. Open Control Panel.
2. Navigate to Network and Sharing Center.
3. Click on the network connection you are using (e.g., Ethernet or Wi-Fi).
4. Click on Properties.
5. Select "Internet Protocol Version 4 (TCP/IPv4)" and click Properties.
6. Select "Use the following DNS server addresses" and enter the DNS server addresses.
7. Click OK and close all windows.

Example Commands for DNS Change on macOS

1. Open System Preferences.
2. Click on Network.
3. Select your active network connection (e.g., Wi-Fi).
4. Click on Advanced.
5. Go to the DNS tab.
6. Click on the + button and add the DNS server addresses.
7. Click OK and Apply.

5. Disable VPN/Proxy

If you are using a VPN or proxy, try disabling it as it might be causing connectivity issues.

6. Use Incognito/Private Mode

Open a new incognito/private window in your browser and try accessing Google Colab from there. This can help if browser extensions are causing issues.

7. Try a Different Network

If possible, connect to a different network (e.g., mobile hotspot) to see if the issue persists.

8. Browser Reset

Resetting your browser settings to default can help resolve configuration-related issues.

9. Check Firewall/Antivirus Settings

Ensure that your firewall or antivirus software is not blocking Google Colab. You might need to add an exception for it.

10. Contact Google Support

If none of the above steps work, consider reaching out to Google support for further assistance.

[Raja999194]

not working bro...i think point 10 should solve issue

[mhsalimi78]

Hey there.
None of the suggestions worked.

[jay-p007]

for me its working
check for update and try or try unistall network driver from device manger then restart system
may be it works

[cperry-goog]

Hi folks, thanks for commenting. A recent update caused an issue connecting for a small number of our users. This has now been resolved. We have not changed any geo availability of Colab. Please open a new bug if you encounter new connection issues.