Using app with minimserver

[Peter StreamMagic]

(25-08-2020 11:56)simoncn Wrote:  Did the AVG technician check whether the M-SEARCH response was being blocked or only the request? The M-SEARCH response is an outbound UDP message sent by the Windows machine to the control point device (your phone). It might not be obvious to the AVG firewall that this outbound UDP message is being sent in reply to an inbound M-SEARCH request.

If the AVG firewall is not blocking this outbound UDP message, it must be the network that is blocking it.

One more thought: do you have any antivirus or firewall software on your phone that could be blocking this UDP message?

@simon : Can this issue still be caused by IGMP snooping?
The OP his router has a setting for IGMP snooping    
this setting might be blokked by his ISP so probably he is not able to change this. Most of the time ISPs enable IGMP snooping in my experience