How to fix ‘App not installed’ error on Android
If the app comes from outside the Google Play Store, first of all let’s make sure that we can download APKs outside the Play Store by accessing Settings> Security> Install unknown apps and choosing here from where to install the APKs. Confirmed this point, again in Settings> Security we can limit the behavior of Play Protect, which is the antivirus system of the Google Play Store and may be blocking the installation of applications.
And another possible solution is through the file system, for which we will need a file explorer like ES File Explorer –download below-. We open it, go to the root of the system and look for the folder System for delete all residual data that could exist from the app to reinstall. Now we will return to the root of the system, we will go to the folder Data and from it, again, we will delete all the data of the application to be reinstalled.
If these above options do not resolve the ‘Application not installed’ error, check that the application is compatible with your device and that the APK is correct. It could also be due to some kind of problem related to the application installation file, instead of being a software failure of your mobile device. Try restarting and repeating the steps above.
Use DR. Fone if the error persists
If the application not installed problem message continues to appear, the error may come from the Android system files, so you will need to repair the operating system. Dr.fone – Android (Repair) It is an application that is capable of achieving this and must be installed on the computer:
- After installing it, open the program and connect the device to your computer.
- Choose “Repair” to find “Android Repair“And then press”Start”.
- Enter the correct information for the device you own and confirm by typing the code “000000”.
- From there, the instructions will be displayed on the screen for the tool to download a firmware to your mobile, and thus repair it automatically.
Why am I getting the ‘Application not installed’ error?
Google is somewhat imprecise when displaying a error in android; so it is not possible to always know, with one hundred percent certainty, for what is this. But this problem can be caused by a bad uninstall that has left residual files, for example, or other problems like an automatic blocking of Google Play Protect. Obviously, the first case will occur when that app has already been installed on the device and, for whatever reason, we reinstall it, receiving this error. However, there may be a few more causes:
If you installed an application and then tried to install a variant of it but with a different certificate (with or without signature), then a technical error will occur showing the message “Application not installed”.
A corrupted SD card can also cause the “Application not installed” error in Android. In fact, the internal storage can also cause failure if it contains unnecessary data or that alters the storage location. To stop this inconvenience, there are ways in which you can repair a damaged micro SD card, it is best to try this before disposing of the memory.
It is possible that the permissions of the application cause the error in your system. For this reason, it is convenient that you go to the “Settings”, then to the “Apps” menu and select “Reset application permissions”, in order to allow the installation of Apps from other sources.