I am new in the forum, but I have been viewing it and the fisrt thing I have to say is that you are doing an amazing work. Once said it, I will told you the problem I have:
My PC dates are these:
Windows XP SP3
Avast 10.4.2233
My problem is that when I want to open the url https://www.canva.com the Avast can not permit to me open it and says this: The Web Shield Avast has blocked access to this page because the following certificate is invalid: ssl275600.cloudflaressl.com. The page I want to enter is a normal page, photograph page in this case and I can enter by others PCs.
In order to solve the problem I have tried these two things:
Make one url exception in Options > Active Protection > Web Shield
Make one url exception in Options > General settings > Exceptions
But it does not work. I hope you can help me.
Thank you very much and sorry for my spanish english.
But the error note is from Avast, not from Mozilla. I suppose what I have to solve is something in Avast not in Mozilla.
On the other hand, I do know the page works correctly, even I am using it in other PC, but what I do not know is why it works in my other PC and not on this one.
The problem being this is an avast and XP SP3 issue as HTPS scanning uses a different method to Win7 or later as the API isn’t present in XP and another workaround has to be used and this can and does result in these errors.
HTTPS scanning in XP SP3 is far from perfected yet. It still doesn’t work with the avast 2016 beta2 11.1.2235.
Another quick thing to check, just to be thorough…
Please check to ensure that your computer’s date, and time, and timezone are set correctly. Having any of these items set incorrectly has been known to cause all sorts of issues. If these items are set correctly, please carry on with your troubleshooting efforts.
