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When trying to install a debugging application, "Playback Protection Alert" appears and the application is installed, but when I uninstalled the application, and try again to install it, it shows me an error.

Why did this error happen?

Error: Play Protect doesn't recognise this app's developer. Apps from unknown developers can sometimes be unsafe.

Angel Tovar Sanchez
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2 Answers2

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I was having the same problem. I did some research and found this:

Expiry of the debug certificate

The self-signed certificate used to sign your app for debugging has an expiration date of 365 days from its creation date. When the certificate expires, you will get a build error.

To fix this problem, simply delete the debug.keystore file. The file is stored in the following locations:

  • ~/.android/ on OS X and Linux
  • C:\Documents and Settings\.android\ on Windows XP
  • C:\Users\[user]\.android\ on Windows Vista and Windows 7, 8, and 10

The next time you build and run the debug build type, the build tools will regenerate a new keystore and debug key. Note that you must run your app, building alone does not regenerate the keystore and debug key.

It worked for me. The source of my information is the official android developers site: https://developer.android.com/studio/publish/app-signing

Community
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Ricardo Lincoln
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I know it is a little late but I had the same issue. Seems like it is caused by if you are using HTTPS URL in API calls. I have separate builds for PROD and DEBUG. On PROD I am using HTTPS and it works and on debug I used to have HTTP only and it used to work fine. Now since changing the API URL I am facing this issue.

Hope this helps!

tahreem
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