Ok this problem may have issed a long time ago but none of the solution that have been mentiond have worked for me, like deleting the bin and obj file then restart vs or reinstall vs.
Im trying to debug my application on my samsung device and this is the error im getting.
My samsung Device is samsung S9 and android version is 9.
Im not trying to deploy my application simple trying to debug the application, so im assuming that there is no need for CERTIFICATES where i have not even enabled it on my android project.
This problem have happend to sudden, so i have no idee how it happend.
Severity Code Description Project File Line Suppression State
Error ADB0010: The package was not properly signed (NO_CERTIFICATES).
at Mono.AndroidTools.Internal.AdbOutputParsing.CheckInstallSuccess(String output, String packageName) in E:\A\_work\1549\s\External\androidtools\Mono.AndroidTools\Internal\AdbOutputParsing.cs:line 333
at Mono.AndroidTools.AndroidDevice.<>c__DisplayClass95_0.<InstallPackage>b__0(Task`1 t) in E:\A\_work\1549\s\External\androidtools\Mono.AndroidTools\AndroidDevice.cs:line 753
at System.Threading.Tasks.ContinuationTaskFromResultTask`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
Update and solution
I have already figured out the problem. There was
keystoresettings in thecsprojfile, even though, the custom keystore settings was not enable it still tried to look at those settings. And there is no way to detect those settings without openings thecsprojfile So all i did was remove those settings and everythings worked.