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I'm trying to run a simple app on my android phone, using Android Studio, and always get this error message:

Session 'app': Installation did not succeed. The application could not be installed: INSTALL_PARSE_FAILED_NO_CERTIFICATES Retry

What does it mean? How do I fix it?

E.Segal
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    duplicate https://stackoverflow.com/questions/2914105/what-is-install-parse-failed-no-certificates-error – L2_Paver Oct 17 '19 at 08:52

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You need to run the debug build:

In Android Studio, open the Build Variants window and set the Active Build Variant to debug for your modules.

If you are trying to run the release build, you need to set up the signing configuration (V1 or V2) correctly.

matdev
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