error code: DLG_FLAGS_INVALID_CA

Hi MicosoftAccount, I am Rob, an independent and a 10 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis. Please remember as independents we are not responsible for the development of Windows or the computer hardware and drivers.

This article explains what it means and why it happens. However it may not be on your end.

Error Code: DLG_FLAGS_INVALID_CA (Explained | Resolved)

https://geekermag.com/error-code-dlg_flags_inva...

Please let us know the results and if you need further assistance.

Article reads the following... 

• When the website certificate is not installed precisely.
• When the website certificate is expired, or the administrator does not renew it.
• The chances are that website you’re visiting is compromised or the site has a malicious redirection.

But none of these conditions are true. Error only occurred on Google sites  Gmail, Google Drive, etc... And those sites loaded fine on other devices. 

I had install avg products with a 30 day trial to remove an issue with a program that could have been used to install malware. I'm hoping when the trial ends that the issue doesn't return. Microsoft defender could not fix it.

Hello,

AFAIK, DLG_FLAGS_INVALID_CA basically means that there are some issues with security certificate on the website. The INVALID_CA stands for 'invalid certificate authority', which may be due to following factors:

• The security certificate is not installed properly.
• The security certificate is installed properly but it is issued for different site and not the current website on which it is installed. Note that, the DNS name or the common name should have the website name mentioned, on which the certificate is installed.
• The security certificate is outdated (either for time period for which it is issued, or the security elements it uses).

For the security certificate having either of above issues, all browsers will stand on same side and won't support loading the associated website. However, the error terminology may be different for different browsers.

So the bottomline is that if you're receiving this error with some website, only option you can try is to contact website owner/admin team and make them aware of issue. If you're having this issue with your own website and you're the administrator, please contact the SSL certification authority and get their support on this issue.