Windows 10 speaks with forked tongue.

I get regular message on my Windows 10 laptop that my router has a problem. Connection to the internet has failed but my wi-fi signal says connected. I check the router with another device and it's ok. The problem is in my laptop so why do I get a false router message. The way I correct this is to disconnect my wi-fi adaptor (it tells me it is connected when it is clearly not) and reconnect it. Is this a common problem or a fault in my laptop?