Note: I would rather comment David's answer in: Unable to connect to wireless after upgrading to Windows 8.1 from 8, but I don't have the required 50 reps to do so.
I recently upgraded to Windows 8.1 and today since I had forgotten my router access password I reset it. Upon resetting the router my system was unable to connect to the wireless network (it just didn't ask any password.. ) so I followed the steps described in the above link and I can now connect through the wifi.
But, the network is automatically renamed to "--networkname-- 2" upon first connecting to the network. Other devices still see and use only the network SSID without the "2" added. If I re-delete the profile and reconnect the same happens again.
I'm using an Asus convertible tablet (T-100) with a Broadcom adapter.
NOTE: after the automatic renaming both profiles (with and without "2") exist, but the name shown in Windows' Network and Sharing Center is the one without the "2", the name shown in the right-side hidden blue bar is the one with the "2".
What's going on with Windows 8.1 on my device?