Unable to join any servers, through IP or public browser

[Zamster]

My friend and I have played plenty of times in the past, as well as when it first launched on steam. I took a bit of a break from the game and decided to go back to it tonight with the same friend. Whenever I would try to join any server, I would be greeted with either "Couldn't establish network communication with server." or "Mods mismatch detected! base: Mod contents are different even though versions are the same".

I have no mods installed, and have reinstalled my game twice since discovering the issue but it still persists. I'm not really sure what else to try. My ports are also forwarded and my firewall has rules in place already.
When I try to host the game, he is unable to see it, or connect through the IP either.
Any ideas?

Thanks

[Smarty]

could you and your friend provide a log?
https://wiki.factorio.com/index.php?title=Log_File

[Smarty]

Did you or your friend change something in the game files itself? I did it myself once and got the same problem

[Zamster]

Did you or your friend change something in the game files itself? I did it myself once and got the same problem

My friend and I both reinstalled our games last night.

could you and your friend provide a log?
https://wiki.factorio.com/index.php?title=Log_File

At what point in the log file should I copy/paste into the thread?

[Zamster]

0.018 System info: [CPU: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz, 4 cores, RAM: 16344MB]
0.019 Display options: [FullScreen: 1] [VSync: 0] [UIScale: 100%] [MultiSampling: OFF] [Screen: 255]
0.020 Available display adapters: 2
0.020 [0]: \\.\DISPLAY1 - NVIDIA GeForce GTX 660 Ti {0x05, [0,0], 1920x1080, 32bit, 60Hz}
0.020 [1]: \\.\DISPLAY2 - NVIDIA GeForce GTX 660 Ti {0x01, [1920,0], 1920x1080, 32bit, 60Hz}
0.021 Create display on adapter 0. Size 1280x720 at position [310, 162].
0.107 Initialised Direct3D:[0] NVIDIA GeForce GTX 660 Ti; driver: nvd3dumx.dll 21.21.13.6909
0.111 Video memory size (dedicated video/dedicated system/shared system/available): 2016/0/8172/4088 MB
0.146 DSound: Starting _dsound_update thread
0.146 DSound: Enter _dsound_update; tid=20300
0.147 Device reset internal.
0.149 Desktop composition is active.
0.150 Graphics options: [Graphics quality: normal] [Video memory usage: high] [Light scale: 25%] [DXT: false]
0.212 Loading mod core 0.0.0 (data.lua)
0.218 Loading mod base 0.14.20 (data.lua)
0.321 Loading mod base 0.14.20 (data-updates.lua)
0.386 Checksum for core: 1291735968
0.386 Checksum for mod base: 2698681569
0.765 Info PlayerData.cpp:55: Local player-data.json available, timestamp 1479445495
0.765 Info PlayerData.cpp:60: Cloud player-data.json available, timestamp 1479264941
0.878 Initial atlas bitmap size is 16384
0.880 Created atlas bitmap 16384x5589
1.174 Created atlas bitmap 4096x968
1.192 Created atlas bitmap 4096x3652
8.490 Sprites loaded
8.490 Convert atlas 4096x968 to: trilinear-filtering
8.507 Convert atlas 4096x3652 to: mipmap
8.841 Loading sounds...
10.271 Custom inputs active: 0
10.308 Factorio initialised
10.309 Game is running on selected version branch on Steam.
18.057 Info UDPSocket.cpp:27: Opening socket at (0.0.0.0:0)
53.515 Info UDPSocket.cpp:235: Socket closed
53.516 Joining game 89.163.255.119:40003
53.516 Info UDPSocket.cpp:33: Opening socket
53.517 Info ClientMultiplayerManager.cpp:539: MapTick(-1) changing state from(Ready) to(Connecting)
53.626 Warning ClientRouter.cpp:115: Received NatPunch from 89.163.255.119:40003 as a client
53.732 Connection refused
53.732 Info ClientMultiplayerManager.cpp:177: Quitting multiplayer connection.
53.732 Info ClientMultiplayerManager.cpp:539: MapTick(-1) changing state from(Connecting) to(Disconnected)
53.829 Info UDPSocket.cpp:235: Socket closed
61.071 DSound: Stopping voice
61.071 DSound: Joining thread
61.076 DSound: Exit _dsound_update; tid=20300
61.076 DSound: Waiting for voice to stop ... signaled
61.076 DSound: Joined thread
61.076 DSound: Destroying thread
61.076 DSound: Thread destroyed
61.076 DSound: Releasing buffer
61.076 DSound: Voice stopped
61.076 DSound: Deallocating voice
61.076 DSound: Deallocated voice
61.213 Steam API shutdown.
61.215 Goodbye
That is the latest log from when I tried to join some servers.

[prg]

0.321 Loading mod base 0.14.20 (data-updates.lua)

That shouldn't be there. Where is it coming from? Did you modify the base game files manually?

[Zamster]

I have uninstalled the game, deleted all files, and reinstalled it 3 times now, I've never actually touched any mods in my entire history of playing factorio

[prg]

That's not mod related, there seems to be an extraneous data-updates.lua in data/base/.

[Zamster]

After uninstalling the game again, I went to check through to see if any folders were left untouched, and there was quite a few that were not deleted/uninstalled. I completely deleted my factorio folder then downloaded the game yet again, and now I am able to join servers. Any clue why steam wasn't completely removing the game from my system?