Left 4 Dead 2

Left 4 Dead 2

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.Adriansun Jul 6, 2013 @ 6:35pm
mss32.dll error - why? :(
The procedure entry point RIB_unregister_interface could not be located in the dynamic link library mss32.dll.

So what does this mean?
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Showing 1-15 of 19 comments
Capt Marvelous Jul 6, 2013 @ 9:38pm 
sounds like a corrupt file. Just verify your game cache and it'll redownload any corrupt files.
Data Jul 7, 2013 @ 1:36am 
verification didnt work for me, it said 1 failed to verify, one will be downloaded, but nothing happened, whats going on, i have to goto task manager click on ok on the

"Procedure entry point RIB_unregister_interface is missing in mss32.dll" and then game loads but i cant join any servers
Capt Marvelous Jul 7, 2013 @ 1:53am 
I'm not completely sure. Try this...

http://forums.steampowered.com/forums/showpost.php?p=33249463&postcount=8


Try removing the bin folder under steamapps\common\left 4 dead 2 and do a verify cache check again then redownload the bin file and contents of it.
Data Jul 7, 2013 @ 1:56am 
just tried to revalidate and this time says every fine, but the error still comes up the same
Data Jul 7, 2013 @ 2:16am 
ahh yes that worked for me cheers blade
OtomeDUB Aug 6, 2013 @ 4:10pm 
Originally posted by Razor:
I'm not completely sure. Try this...

http://forums.steampowered.com/forums/showpost.php?p=33249463&postcount=8


Try removing the bin folder under steamapps\common\left 4 dead 2 and do a verify cache check again then redownload the bin file and contents of it.

Hello! So I tried this and it didn't work for me :( anyone know anything else I could possibly try? This is so sad D:
OtomeDUB Aug 6, 2013 @ 4:34pm 
Never mind! Totally didn't read the second part of Razors post. Working now! Thanks so much :D
I just deleted steamapps\common\left 4 dead 2\bin\mss32.dll and that worked fine!

(I assume it's a primary location for the game to load files from, so deleting individual files makes the game fall-back on the originals in the VPK files. Also it means that a game-cache check wouldn't detect it.)
Capt Marvelous Sep 9, 2013 @ 3:55pm 
Glad I could help! :)
I have the same problem too, I deleted the bin folder, verified the game cach files, four files failed to validate, then I verified them again, then all the files validated fine, and I still get the same error message.
I deleted the mss32.dll file and my game finally launches with no problem!

Thank you Razor and ^0Ultimate^1Sniper!
Hello, guys!
I have the same problem. Tried all above several times. Re-download game and steam - doesnt help.
Before everything works fine. Then I had a notification about missing fail, but game works. Now it doesnt.

I switched antivirus - doesnt help.

Is it possible - someone has diffirent decision?
[PBS]Morena Samba Dec 14, 2013 @ 11:06pm 
Yes, now I heard that Left 4 Dead 2 has all kinds of issues right now
addic7eD Dec 15, 2013 @ 1:45am 
Originally posted by Евгеша:
Hello, guys!
I have the same problem. Tried all above several times. Re-download game and steam - doesnt help.
Before everything works fine. Then I had a notification about missing fail, but game works. Now it doesnt.

I switched antivirus - doesnt help.

Is it possible - someone has diffirent decision?

You just need to google mss32.dll and redownload that file in l4d game/bin directory. Choose to replace it with new one and you're good to go.
No need to delete or replace mss32.dll, or delete the whole 'bin' folder. What fixed this error for me is to delete mssvoice.asi in \Steam\steamapps\common\Left 4 Dead 2\bin. I left mss32.dll untouched.
Last edited by Mantis Toboggan, M.D.; Apr 26, 2014 @ 2:37am
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Date Posted: Jul 6, 2013 @ 6:35pm
Posts: 19