Posts Tagged ‘wifi’

Fix Apple Macbook Air/Pro Wifi Roaming Wireless Problems

As it can be expected from Apple, there is no user interface to adjust or change the wifi roaming agressiveness. This is VERY IMPORTANT if for example you use Macbooks in a very dense wifi environment. If you have a Macbook that’s dropping packets when roaming or having trouble roaming from AP to AP, then […]

T-Mobile Wifi Calling – ER081 Firewall Port Summary

Open the following ports on your firewall: TCP 5060-5061 UDP 4500 (aka IKE Traversal)  –  Note: This is the port the call data goes through Additionally, you may need to let IKE Key Exchange traffic through. UDP 500 Other errors: REG99 – Go to and update your E911 address (even if you previously have)

Fix Surface RT Limited Wifi Connection

NOTE: Changing the BAND settings below will cause 5Ghz wifi to no  longer work on your Surface. You must keep BAND at 6 for 5Ghz wifi connectivity. 10/31/2016 UPDATE: This setting is now found in the following location: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0000] “Band”=dword:00000004 “[2.4Ghz or 5Ghz]AutoUse40MHz”=dword:00000000 Tip came from: and modified slightly by me. This helpful tip […]