Problem in publishing settings

I want to publish my second game , but when i try it on an emulator i receive the message “install parse failed inconsistent certificates” .
If it was a problem of password , which i am not sure if i remember it correctly, then why when i build my first game and then try it on an emulator , there is no problem ?
I am confused , please hlp…

Maybe u used the same keystore? Actually I’m interested in it too.

I’m guessing you installed the game with a different certificate the first time? Perhaps the debug key? If you deploy from the Unity editor it should automatically try to uninstall the game and re=install it but if you do it by hand you need to manually uninstall the old version of the gam before deploying a new version.

The second game (i am not talking about upgrading the first one , but a totally different game ) must have different keystore and key (alias) than the first one or what …

No, I would say signing the application using the same certificate is what you should do.

“In general, the recommended strategy for all developers is to sign all of your applications with the same certificate, throughout the expected lifespan of your applications”

Of course you have to make sure you use different package names etc so the applications doesn’t collide. Basically what the editor is telling you is that there already exists an application with the same package name as the application you are trying to deploy but with a different certificate. This usually happens if you switch from a debug key to your production key.