Installing apk files - App not installed? ???

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Apr 15, 2012
Hi all, bare with me, i hope this is in the correct place as have searched and cant find a thing. Just come from an iphone to samsung note so be gentle..

I am trying to install. Apk files from several locations , phone memory, sd card, network..

But i keep receiving "App not installed." Message 99% of the time, every now and then it will work, but i have no idea whats going on please help.

I am running stock 2.3.6 gingerbread, unrooted as that wont work either :/

Using XDA Premium (GT-N7000)


Senior Member
Jul 4, 2008
I think a typical scenario that causes this problem is when you upgrade apps and some somewhere down the upgrade process the Dalvik cache and other folders art not cleared.
Watch fix the problem for me was apps2sd which was already installed and what I did was using a broken appcleaner and cleared all the Unwanted files turned out to be somewhere around seven hundred plus MB.
That fix the problem


New member
Feb 7, 2017

Difficult so say what the cause of your problem is. Obviously not your sd card and memory ;)
One cause may be the google Play Store app.

Did you try:
1. Tap the Settings icon, select Apps > All > Google Play Store > Force stop / clear cache
2. Tap the Settings icon, select Apps > All > Google Play Store > Remove all updates (you can re-update later)

From the quora website:

Possible/Common causes of “Application not Installed” error

Insufficient storage space: Your storage space may have filled up with no more space to accommodate new apps.

Corrupted app or apk file: This is most common with apps downloaded from outside Google Play Store. The app is either corrupted or incompletely downloaded or copied as the case maybe.

Incorrect app install location: Some apps are meant to be only installed on phone memory while some others can be installed on both phone memory and SD card. Trying do otherwise with the former can bring up this errors.

Installation on a mounted SD card: Maybe, your SD card is mounted on a laptop or elsewhere. Trying to install anything in this state will result in errors because the SD card is inaccessible.

Corrupted storage (Phone and SD card): This is probably the most common cause of this error. If the storage of your device is corrupted, any app installation will be impossible.

Apk signature/certificate clash: Installing another version of an app (with a different signed certificate) on the same device will probably result in this error. Installing an unsigned app could also result in this error.

App permission errors or temporary OS glitches could also bring about this error.

Possible Solutions of “Application not Installed” error

Reboot the phone: In times like this, first thing to do is to reboot your device. Or just shut down, remove and reinsert your battery.

Make sure to uninstall any apps you don’t use to free up space, also uninstall previous versions of the same app currently installed on your device.

Double check the apk files you download and be sure they were completely copied or downloaded.

Try resetting app permissions by going to Settings >Apps>All>Menu key >Reset application permissions or Reset app preferences.

Change app installation location to Automatic or Let system decide.

Make sure your SD card is not mounted or connected to a PC or elsewhere.

For worst case scenarios, format your SD card – copy it’s contents somewhere else for backup and format.

The last solution would be to totally wipe your device. Either by doing a factory reset under Settings or by doing a full wipe in recovery mode.
Last edited:

Ed Usher

New member
Mar 18, 2017
Was having the same thing when trying to export a signed package from Eclipse. I resolved the problem by setting a 'key' in the keystore with a long lifetime - when it was just a year then the problem occurred. Also found that it was a good idea to 'Uninstall for all users' if the app is already installed.

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    To manually install an app, you'll need root access. Try asking in the q&a forum for your specific device for help with that.

    After you've gotten root access (however you do it), copy the .apk to /system/app (you can use a adb, a terminal emulator, or a third party file manager to do this)

    Then, change the permissions on the file to so that owner, group, and users all have read and write (but not execute) permissions (that's 644 if you're using chmod)

    Here's a link that explains how to manually install an app contained in taskmanager.apk

    If you read the explanations (after the he steps you through the process) it's easy to apply this same process to any other .apk no matter where it's stored.
    i got a quick easy solution

    I had ROM toolbox installed and set my install location to SD card. So i changed it back to AUTO and it works great now. Hope i helped :)

    EDIT: it might be another app, or even just you set it like that in your settings (should be in apps or storage i think)
    if your mobile is rooted you can try to open lucky patcher and just keep it opened
    after some time it will give you a notification about a file which the app has deleted
    dont worry it wont delete any important file
    now try to install that app again
    it will most probably work

    Please perss thanks button 'It helps me a lot :)