Hi, One of the users of a Excel Js Add-in that I’ve recently had published to AppSource (Copy as List) has reported getting an Anti-Virus popup every time he starts Excel.

From Avast anti-virus. The message is:

Connection to this website is not secure.

Avast has blocked access to https://uci.cdn.office.net/ because one of the issuers of the server certificate has expired.

Certificate: cdn.uci.officeapps.live.com

Issuer: Microsoft Azure ECC TLS Issuing CA 01

Indeed, if I try to browse to that URL in Chrome, I get an error:

“This server could not prove that it is uci.cdn.office.net; its security certificate expired in the last day. This may be caused by a misconfiguration or an attacker intercepting your connection. Your computer’s clock is currently set to Friday 28 June 2024. Does that look right? If not, you should correct your system’s clock and then refresh this page.”

Does anyone know what this is? Is it related to my add-in? How do I fix it? What advice do I give to my user?

Thanks

​Hi, One of the users of a Excel Js Add-in that I’ve recently had published to AppSource (Copy as List) has reported getting an Anti-Virus popup every time he starts Excel. From Avast anti-virus. The message is: Connection to this website is not secure.Avast has blocked access to https://uci.cdn.office.net/ because one of the issuers of the server certificate has expired.Certificate: cdn.uci.officeapps.live.comIssuer: Microsoft Azure ECC TLS Issuing CA 01 Indeed, if I try to browse to that URL in Chrome, I get an error:”This server could not prove that it is uci.cdn.office.net; its security certificate expired in the last day. This may be caused by a misconfiguration or an attacker intercepting your connection. Your computer’s clock is currently set to Friday 28 June 2024. Does that look right? If not, you should correct your system’s clock and then refresh this page.”Does anyone know what this is? Is it related to my add-in? How do I fix it? What advice do I give to my user? Thanks  Read More

​