Some devices with Windows and Intel wireless adapter cannot see Wi-Fi at buildings PEF, CEMS1, CEMS2, T-Pavilion (FTZ) and mensa. Problem is caused by old drivers for wireless adapter.
Driver must higher than:
18.104.22.168 for Windows 10 for 9461,9462, 9560, 9260, 18265, 8265, 18260, 8260 adapters.
22.214.171.124 for Windows 10 for 3168, 3165, 7265 (Rev. D), and 17265 adapters.
126.96.36.199 for Windows 10 for 7265 (Rev. C), 7260 and 3160 adapters
How to check driver version:
1) Right click on start
2) device manager
3) network adapters
4) choose right adpate (for example: Intel(R) Dual Band Wireless-AC 7265) doubleclick
5) tab Driver
6) Driver version must be higher or same from list above
Solution for this problem is simple. Download the latest driver for your Wi-Fi card direct from Intel:
You can also use the automatic detect tool for your adapter.