I have a Dell H825cdw attached to my Windows 10 Dell Inspiron 5759.
I recently changed Internet providers, so had to reconnect the printer under the new WiFi name and password.
Once connected, I can print for about five minutes, then the printer goes offline, and I'm required to re-enter my password on the printer menu window before I can print anything again. (WiFi group name is still listed, don't have to hunt for it).
As I work from home several times per month, it gets very frustrating to have to enter a password and restart the printer every time I need to print something.
The WiFi button is lit up (not flashing), menu window says I'm connected, and that the signal is good.