SM
Satisfactory Modding•4h ago
Emery

SMM can't install mods: failed to resolve lockfile

Some mods install fine, others don't install at all. Every time this happens I get a 'failed to resolve lockfile' error. SMM lists them as "installed" on the profile after the error, but checking the mod folder in my files I can see that they aren't actually there. Whenever an installation has been successful, that mod & its dependencies seem to run fine on local singleplayer and the failed mods just don't show up. I've tried deleting the [name]-lock.json files, running SMM as administrator, restarting my PC, and creating a new SMM profile to start over. The attached log is from my most recent attempt to install SML on a new, blank profile after deleting the other profiles and repeating all the other steps mentioned above. I run Satisfactory through Steam on a Windows 11 PC, if that helps. Any info or suggestions would be appreciated! Sorry if this is an obvious issue, I've done my best to research it but I'm unsure how to interpret the log.

SMMDebug-2025-10-04-...

1 Reply
FICSIT-Fred
FICSIT-Fred•4h ago
SMM Version: 3.0.3
Game: WindowsClient CL 433351 from steam
Path: `c:\Program Files (x86)\Steam\steamapps\common\Satisfactory`
Command Line: cmd /C start  steam://rungameid/526870-NO_EOS_OVERLAY
SMM Version: 3.0.3
Game: WindowsClient CL 433351 from steam
Path: `c:\Program Files (x86)\Steam\steamapps\common\Satisfactory`
Command Line: cmd /C start  steam://rungameid/526870-NO_EOS_OVERLAY
-# Responding to Key Details for SMMDebug-2025-10-04-22-46-51.zip triggered by @Emery

Did you find this page helpful?