Internet connectivity, wifi

Hi Fernando,

We're glad to look into this & help you.
Initially, please clarify whether you experience both the issue on your MAC. 
Regarding the legacy system extension, kindly check this article for more info.

Hello, 
I greatly depend on wifi where ever I go due to my business travel.  I have found that your antivirus software doesn't allow for wifi access in most if not all the places I go to.  As well, I just received this error message:

Legacy System Extension
Existing software on your system loaded a system extension signed by "AVG Technologies CZ, s.r.o" which will be incompatible with a future version of macOS. Contact the developer for support. 
 

Hi Fernando,

We're glad to look into this & help you.
Initially, please clarify whether you experience both the issue on your MAC. 
Regarding the legacy system extension, kindly check this article for more info.