CFileSystem_Steam::Init() failed: failed to find steam interface HL2 mods

[aceta120]

Hi friends, any HL2 mod i have not from steam, things like No More Room in Hell Black Mesa etc get this error. "CFileSystem_Steam::Init() failed: failed to find steam interface"

Any Mod I got from Steam (Zombie PanicSource, Insurgency, etc) Works fine. So does Hidden: source, which isn't from steam, which is odd.

I read that sometimes illegal accounts get that error, but I can assure my account is 100% legal

Know any fixes for this? Please Post them here!

[C. Fatz]

I had this error, I managed to fix it by doing the manual uninstall of Steam, I know it's out of the way but it'll definitely fix the issue. Here's a link:
https://support.steampowered.com/kb_article.php?ref=9609-OBMP-2526
Others have said there is a Steam.dll in Filesystem:C/Windows/System32 but I didn't find one. You may also want to try to opt in a beta of the Source SDK's and every Source game you have. You may also want to be a bit more descriptive in the title Make it
Can't start up game error on all Hl2 mods not installed from steam
as Odd error on all Hl2 mods not installed from steam sounds as if it might just be an object that is untextured or something along those lines. Anyway, I hope this fixes your problem

[C. Fatz]

What antivirus do you use, there are some that also cause this error

[aceta120]

Out of all the antivirus software I have seen that causes issues, mine has not been one of them. But I will try something with it.

[humvee]

i have this problem only with Black Mesa Source

[aceta120]

I have it with any source mod that is not downloadable straight fro msteam, things like ZPS are fine, things like Black Mesa do not work at all

[Bad 💀 Motha]

First try disable your AV temporarily and then retry and see if u still get errors.
If still get errors, move your SteamApps folder out of the Steam folder, then uninstall/reinstall Steam Client. Once reinstalled, move your SteamApps folder back to the root Steam folder so u have all your games back.

[aceta120]

Thanks for the tip, i'll be sure to try some of this stuff

[Isaac Clarke S-laughter]

Commenting here just and only because this is one of the first Google Results (damn you google!).



I get the [CFileSystem_Steam::Init() failed: failed to find steam interface] with some things I am doing, mainly Team Fortress 2 related.

Long story short: I am trying to run OLD versions of TF2 without Steam because I want to use them on OLD computers, period.

I can extrapolate by the name of the error that this is just and only a failure on the .exe's side to find Steam running, so tricking it into believing it is would fix it.

I HAVE NO IDEA HOW TO DO IT, I am not a code writer, and don't know of mods or stuff yet, I am still researching, but since I am here I may just leave this note for posterity.