my aoe doesnt start when using 1.6rc? how to fix

Please provide more information, e. g. any error messages you are getting and a more detailed description on what isn't working anymore.

"Game starts but it shows "Ünable to Join" at multiplayer screen, sometimes it starts though, not sure whats the challenge

Please provide the results of both, the network and the game diagnostics. Thank you.

Non-DirectPlay game path is 'g:\games\age of empire-ii the conquerors'
Verifying 'g:\games\age of empire-ii the conquerors\language_x1.dll' exists...
Success!
Verifying 'g:\games\age of empire-ii the conquerors\age2_x1\age2_x1.exe' exists...
Success!
Voobly path is 'c:\program files (x86)\voobly'
Game version is '1.0C-VLY'
Verifying 'g:\games\age of empire-ii the conquerors\language_x1_p1.dll' exists...
Success!
Checking DirectPlay libraries...
Looking for dpwsockx.dll...
Looking for dplayx.dll...
'c:\windows\system32\dplayx.dll' size: 220672 bytes
DirectPlay Init Success!
Scanning installed DirectPlay games...
Age of Empires II - The Conquerors Expansion [found]
Game was found in DirectPlay registry!
DirectPlay play thinks the game is installed at 'g:\games\age of empire-ii the conquerors'
DirectPlay command line is 'Lobby'
DirectPlay play thinks the game exe is at 'g:\games\age of empire-ii the conquerors\AGE2_X1\age2_x1.exe'
Verifying file exists... Success!
DirectPlay play thinks the language dll is at 'g:\games\age of empire-ii the conquerors\language_x1.dll'
Verifying file exists... Success!
Scanning 'c:\program files (x86)\voobly\gamedata\AOC\age2_x1.exe'
Success!

Everything looks fine. DirectPlay is configured and the game was found on your harddrive. If you still have problems try rejoining the lobby or restarting your computer.

Starting networking diagnostics...

Your local network port (UDP) is 16000. All game traffic is routed through this port. This can be changed in "Settings" -> "NAT Traversal".

Attempting to connect to 3 test servers. This will take around a minute to complete...

Received data from 'server 3' through port 64952 (this is your WAN or router port)
Received data from 'server 1' through port 64952 (this is your WAN or router port)
Received data from 'server 2' through port 64952 (this is your WAN or router port)
14 seconds left.
9 seconds left.
4 seconds left.

Test Result: Not Forwarded
Network Health: Warnings found but probably OK
Recommended Action: if you experience networking problems such fast proxy then port forwarding is recommended. The only port you need to forward is UDP port 16000 on Voobly you do NOT need the direct play ports 2300-2400 and 47624.
Details: You were able to receive traffic on the same port from all the servers, however, you were not able to receive data on the port configured in the Voobly client settings. It is recommended you forward this port in your router to the PC you use to play.

For help understanding this report or for more information go to http://www.voobly.com/pages/view/177#Network_Diagnostic_Tool.

If you take a screenshot of your port forwarding rule in your router I can help you to configure it correctly.

This probably also the same issue as this one? https://voobly.com/forum/thread/354682

Since he reports it occurs only in 1.6 and sometimes it works and sometimes not?
If he was fp no one would let him play, but he played 300 matches.

I think I found it, needs further testing though…

1.6 rc patch not working at all

Error Screenshot:- https://deathsquad.voobly.com/files/team/80550793/Capture.PNG

Another update has been released today, please check whether you are still having the issue.

worked after the update few games, but now its failing to load again

The information has been passed to our 1.6 developers. The issue is being reviewed and we hope to have fix for this soon.