'Cisco AnyConnect Secure Mobility Client will damage your computer' Mac Error

MacOS updates bring a lot of great features and improvements, but they may also cause temporary issues. Sometimes, users who install the latest macOS version may end up seeing various errors when opening software that is out-of-date. Currently, many macOS users seem to be reporting the 'Cisco AnyConnect Secure Mobility Client will damage your computer' message. This error sounds like a serious problem, especially because it is spawned by macOS' built-in security features. The good news is that there is nothing dangerous to worry about – the error is nothing more than a misunderstanding.

But what causes the 'Cisco AnyConnect Secure Mobility Client will damage your computer' Error?

This issue occurs when the security certificate of the software, Cisco AnyConnect, is out-of-date. When this happens, the built-in protection of macOS, XProtect, may block the app from running. This happens because XProtect falsely identifies it as a non-trustworthy app. In this particular case, it seems that the issue occurs when the user is running version 4.7 or older of Cisco's software. Thankfully, newer updates are already available, and updating your Cisco AnyConnect software to 4.8 or above should resolve the issue permanently.

What can you do to avoid seeing such error messages in the future? We advise you to apply updates to your operating system and all software immediately. Postponing such updates may result in issues like the 'Cisco AnyConnect Secure Mobility Client will damage your computer' error, and also leave your system vulnerable to unpatched exploits. A similar error is the 'Vpnagentd will damage your computer' message.