01

The five-point compatibility check

  • Device: desktop, mobile, Chromebook or console.
  • Edition: Java Edition or Bedrock Edition.
  • Game version: the complete number shown in Minecraft.
  • Loader: Forge or another loader required by the Java build.
  • File format: .jar for Java mods; .mcaddon/.mcpack for Bedrock add-ons.
02

Java compatibility

Java mods are version-sensitive. A build made for 1.12.2 should be launched with the matching game and Forge profile. Moving it into a newer mods folder does not convert it.

03

Bedrock compatibility

The inspected Jenny Dweller add-on contains linked behavior and resource packs at version 0.0.1 with minimum engine 1.17.0. Its manifest does not declare a maximum version, so a broad version range should not be treated as a verified test result.

04

Signs of a mismatch

  • The file opens in an unrelated program.
  • Forge reports an incompatible or missing dependency.
  • The mod is absent from the Mods list.
  • A Bedrock pack imports but cannot be activated.
  • The game crashes before reaching the menu.
FAQ

Frequently asked questions

Can I rename a .jar to .mcaddon?+

No. The formats contain different code and pack structures; renaming does not convert them.

Will a 1.12.2 mod work with newer Forge?+

Normally no. Use the Forge build intended for the same Minecraft version.