Whenever I login to my Yahoo Mail or Google using Google Chrome, I get a warning that says:
Your connection is not private. Attackers might be trying to steal your information… NET::ER_CERT_COMMON_NAME_INVALID
There are some instances when this warning appears and there is nothing to worry about. Here’s how you can handle the issue in Microsoft Windows.
Note: If this warning is occurring for many websites you visit, be sure that the time is set correctly on your device.
Option 1 – Simply Proceed
If Chrome says the security certificate is from the same domain you are attempting to login to, it is likely there is nothing to worry about when this warning appears.
- To proceed, simply choose the “Advanced” link, then choose “Proceed to <link> (unsafe)“.
Option 2 – Prevent Warning
- Kill all instances of Google Chrome. You can do this in Windows by holding the Windows Key and pressing “R” to bring up the Run dialog, then running “tskill chrome*“
- Run Chrome using the “--ignore-certificate-errors” switch. You can do this one of two ways:
- Windows Key and pressing “R” to bring up the Run dialog, then type “chrome --ignore-certificate-errors” and select “OK”
- Make a new shortcut for Chrome that runs “chrome --ignore-certificate-errors” You can do this by:
- Right-click a blank area of the Desktop, then choose “Shortcut“.
- For the location, type “C:\Program Files (x86)\Google\Chrome\Application\chrome.exe” --ignore-certificate-errors. Be sure to include the quotes.
- Select “Next“, name the shortcut, then select “Finish“. You can now use the new shortcut to launch Chrome and bypass certificate errors.
- If executed correctly, Chrome will have a yellow bar at the top of the screen that says “You are using an unsupported command-line flag”. You can close this warning and proceed browsing. You will no longer be bothered with certificate warnings.
Start Chrome in MacOS using these steps
- Close Chrome.
- From the Finder, select “Go” > “Utilities“.
- Launch “Terminal“.
- Type the following command, then press “Enter“:
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --ignore-certificate-errors &> /dev/null &
Option 3 – Allow Invalid Certs from Localhost
This option will only work for requests to localhost over HTTP.
- In the Chrome address bar, type “
- Select the “Enable” link.
Note: Only perform these steps if you’re sure of what you’re doing and are sure that there is no attempt to compromise your connection.