Please try doing these steps:
In the rare case that you do not know why you can't connect to any server, we recommend doing these steps:
- backup any useful data related to MTA:SA (resources, screenshots, logfiles etc.)
- uninstall MTA:SA
- uninstall GTASA
- remove all folders that are related to MTA:SA/GTASA which might have been left:
-- C:\ProgramData\MTA San Andreas All
-- C:\Program Files (x86)\MTA San Andreas (or wherever you have installed MTA:SA)
-- C:\Program Files (x86)\Rockstar Games\Grand Theft Auto San Andreas (or wherever you have installed GTASA)
- scan your PC thoroughly with an Antivirus and Antimalware software
- make a clean install of GTASA (pirated copies are not recommended as they might have been modified. Don't own the game? Get it on Steam.)
- download the MTA:SA client from our homepage (
http://www.mtasa.com) then install it. Try installing it on a different partition if possible, or in a location that's outside C:\Program Files (x86) directory
- do not install any third party GTA mods
- take great caution when using any third party addons to MTA (skins, resources, etc.)
- do not use any cheating devices (obviously), but also avoid any software that may affect your network, the game or their performance in any way that could give you an unfair advantage over other players in the game
Once that is done, try connecting to a server again.
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This can also be caused by some obscure problems with your internet connection/ISP, or there might be some software installed on your PC that is interfering with it (based on your MTADiag log you seem to have a lot of processes running).
Try uninstalling some of the not explicitly needed programs. Obviously, take caution with that, if you don't know what a certain program does then google its name to find out.
Also try connecting to different servers (with different ports), or try using a different internet connection/VPN if possible.
Another solution: if you have avg anti virus please delete it.