How To Fix Dlg_Flags_Invalid_ca Error?

Fix Dlg_Flags_Invalid_ca Error – This site is not secure” error in a technical language is named as DLG_FLAGS_INVALID_CA or DLG_FLAGS_SEC_CERT_CN_INVALID. It occurs when people are trying to open certain websites. … problems with the website’s security certificate; missing the trusted root certificate for the Certification Authority (CA) on the site.

Fix dlg_flags_invalid_ca error

Clear Browser Cache

Sometimes, the cache in the browsers can cause problems with the certificates installed. The solution, in this case, is to clear the cache of the browser where the website is causing the issue. Subsequently, it may be viable to clear the cache of all installed browsers, just to be on the safe side. We will be handling Microsoft Edge and Google Chrome in this solution.

For Google Chrome

  1. First, paste the URL chrome://settings/clearBrowserData in the address bar.
  2. Then, make sure the Cached images and files option is selected. Click on Clear data
  3. Moreover, you can set the range depending on the time since the last update or when the issue started.
  4. Lastly, click on Clear data.

For Microsoft Edge

  1. First, paste the URL edge://settings/privacy in the address bar.
  2. Under Clear Browsing Data, click on Choose what to clear. Then, make sure the Cached images and files option is checked.
  3. Moreover, you can set the range depending on the time since the last update or when the issue started.
  4. Lastly, click on Clear now.

Check if System Time and Date is Synchronized

The biggest reason for invalid certificate error is system date and time is not synchronized. Although this may seem a minor problem, certificates rely on system time and date. If they are not synchronized, the certificates perceive the system as being outdated. To make sure system time and date are synchronized.

  1. First, right-click on Windows 10 taskbar where the time is located.
  2. Then, click on Adjust date/time.
  3. If Set time automatically is not enabled then be sure to enable it.
    Enable Set time automatically and sync time
  4. Then, check under Synchronize your clock when the last sync was.
  5. If the last sync was some time ago click Sync.

Moreover, make sure you have selected the correct time zone.

Change Internet Options

Although, you may not have faced this issue before, as stated above, updates for either the browser or for Windows can cause issues with internet certificates. Moreover, there is also a chance for Windows updates to cause changes in some system settings. However, this solution is more of a workaround than a solution. This solution is recommended only if you have an anti-virus installed. To change the internet options of your computer

  1. First, press the Windows key and type Internet Options.
  2. Then navigate to the Advanced tab.
  3. Scroll down in Settings.
  4. Then, under Security deselect the option Warn about certificate address mismatch*.
  5. Finally, restart your computer.
  6. Hopefully, your issue will have been resolved.

Also Read: How to Fix Twitch Error 2000?

Reset the Browser

You can also try to reset the browser to get rid of the error code DLG_FLAGS_INVALID_CA. Here we take Chrome as an example:

  1. Open Chrome, click the three-dot menu to choose Settings.
  2. Scroll down Settings, click the Advanced button.
  3. Then click the Restore settings to their original defaults option, and then click Reset settings to confirm the action.
  4. Check if the error is fixed.

Disable the Warn About the Certificate Address Mismatch Option

The last method is to disable the Warn about certificate address mismatch option. Here is how to do that:

  1. Type internet options in the search box and then click the best match one to open it.
  2. Go to the Advanced tab, and then uncheck the Warn about certificate address mismatch box.
  3. Click Apply and OK to save the changes.
  4. Restart your computer to check if the error is fixed.

Add a Comment