Yes, currently having this issue since Easter on all student laptops but not staff's. Thought it was Fortinet firewall but could also be Lightspeed as we rolled them out at the same time. Our support company said it was probably an authentication error as student devices are fully cloud and staff will be connected to on prem servers which the authentication is happening through there. Students also have Lightspeed and staff don't. The only fix I have currently is restarting the laptop, waiting for the WiFi to connect and logging in, this fixed it every time. Students have told me that this happens at home as well which could point to Lightspeed being the culprit but I can't verify this.
Asus and Lenovo laptops, Edge and Chrome.