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Installed app was signed with a different key

Android / Gradle · last reviewed 2026-11-10

The error looks like this

Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.acme signatures do not match

Why it happens

You have a Play/debug version installed with another signature.

How to fix it

  1. adb uninstall <your.package.name>
  2. Install again.

Not sure this is your error? Let ReleaseMedic read the whole log

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$ npx releasemedic log build.log

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Catch it before you build

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