WLAN is on the phone but not laptop?

I moved to a new apartment, and this is equipped with Wi-Fi, password etc is synonymous everything. With the phone, I'm in the Wi-Fi inside, but my laptop indicates, no access to the network. Where is that? So he looks for us also finds it with full reception, logs in and suddenly no access.

Is the PC really logged in? Open the windows settings and click on "Network and Internet", then on WLAN and then on the name of the WLAN. If you then scroll down to the bottom, the properties of the connection are displayed. Are IP addresses displayed there? What about DNS Server?