"Could not get client certificate"

Hi William,

We're glad to help you with this.
Please let us know the browser in which you're experiencing this issue & try accessing those websites in a different browser to check if it allows you to access.
For better clarity, share us the screenshot of the message that you receive.

I need to get to certain legitimate web sites, but I get the message "could not get client certificate' appears and I can't. 
How do I get to these sites, all of which are trustworthy?

William, thank you for the information.

We are not sure why exactly you get this certificate error, please share the screenshot of the error message to assist further.

You can turn off AVG Secure VPN and check to access the web page.

Did you try to access this website from a different web browser(Google Chrome, Firefox, Internet Explorer)?

It's a secure US Census site. I'm a Census employee, and have signed in correctly.

This is all it says on the page:

" Access Manager
Could not get client certificate."

So is this just Census security or is AVG VPN preventing my access?