Minimwatch not finding server

[lg.lindstrom]

(22-11-2019 11:54)simoncn Wrote:  It looks like you have specified an invalid subnet 172.17.16.192. The subnet is not the same as an IP address but is a combination of a subnet mask and IP address.

For most local subnets, the subnet address can be obtained by changing the last digit of the IP address to zero. If this applies to your local subnet, the IP address 172.17.16.192 would have a subnet address of 172.17.16.0.

Okay,, but where is that specified. As far as I know,, this is nothing I have done.
How do I remove/correct this.
( sorry for stupid question,, I am not a computer specialist .. )