error- Failure [INSTALL_FAILED_SHARED_USER_INCOMPATIBLE]

[MReddy]

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I am trying to install WSo2EMM Android system service application as i want silently install apps through Wso2 Agent (sets up a Work Profile). To get the system root privileges I have used android:sharedUserId="android.uid.system" I have also signed the application as mentioned here using sign-apk.jar and platform.x509.pem, platform.pk8 keys from here. But when I tried to install the signed APK through ADB on both Sony Xperia X peformance and Samsung Galaxy On5. I got the error. Failure [INSTALL_FAILED_SHARED_USER_INCOMPATIBLE] Does the device have to be rooted to sign using the platform keys? I dont want to root my device. is there any alternative or getting the firmware key from the device vendor is the only option I have? If that is the only option how can i get the key from the Vendor? Thank you

[MReddy]

[Agustín Rizzo]

Hi MReddy, I'm in same exactly situation as you. Did you find any solution to this error? Thanks a lot

[MReddy]

Hi Agustin Rizzo,

No I havent found an alternative. Seems to be there are only those two ways to install your app as a system app atleast as far as I know till date! To get rid of the error , you have to do any of this 

Thanks

[Jacky Lam]

You can't do that even you root your device, because you don't have the same private key from either Sony or Samsung.

[MReddy]

I did this by rooting my device. I am able to silently install the apps