I have a Raspberry Pi 3. 32 GB edition. The wireless feature was working fine...now it is not. It appears to be connected to the wireless network at work, but typing in a URL results in no result. Also, how do I turn off the wireless feature? Eventually, I will not need wireless capability.
Did you edit any static IP configurations that might be wrong and could be the problem?
To disable Wi-Fi you can edit the file /etc/modprobe.d/raspi-blacklist.conf by adding the following lines:
blacklist brcmfmac blacklist brcmutil
Hope this helps.