Blocked office website

Hello Andrew.
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We certainly check and help you.
Do you get any error messages?
If so please help us with a screenshot of the error to check and help you further.
Here is the link which has the steps to take a screenshot :
| AVG (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home)
Thank you.

Hello Andrew.
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused to you.
We certainly check and help you.
Do you get any error messages?
If so please help us with a screenshot of the error to check and help you further.
Here is the link which has the steps to take a screenshot :
| AVG (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home)
Thank you.

When working on a Word document I get the message:
Connection to this website is not secure
//oficeclient.microsoft.com/
Server certificate invalid.
Any help in rectifying this problem would be gratefully received.
Thanks
Andy