Often users of smartphones based on the Android OS experience a problem when they try to install the application and see the following message on their screens: "Unknown installation error: code 24". This error is very common, but why does it appear? There may be several reasons, ranging from a malfunction in the OS to an incorrectly deleted program. In this article, we will talk about all the common causes of this error and consider how to resolve it.
Android OS crash
So, the first reason why an “unknown installation error may appear: code 24” is a malfunction in the phone’s operating system, that is, a malfunction in Android. Do not be afraid that the phone may malfunction - this is quite normal and commonplace, which, however, is not always painless. Very often, files that are important for the operation of the OS can be damaged due to it, as a result of which all sorts of errors appear.
There are two ways to fix this problem:
- First, it is the simplest and fastest, but not always effective and efficient - rebooting the phone. All you need to do is just reboot your device. If the failure did not affect the contents of any files, then he could simply introduce violations into their work, and this is not so scary and can be easily and easily fixed.
- The second method is suitable if the first failed, - reset the device to the factory, that is, the initial state.
Sometimes, a system failure can cause serious consequences, as a result of which important system files can be damaged, and a simple reboot will fail to restore them. In this case, you should resort to resetting the settings. You can do all this without much effort:
- You need to go into the phone settings.
- Go to the menu item "Backups".
- Click on the button at the bottom of the "Reset to factory default" button.
Everything is simple!
Google service issues
The second reason why an "unknown installation error appears: code 24" - the Google Services application crashed. This is an application that collects various information about how programs from Google work. If the phone crashes, there is a big chance that it can affect the Google Services application cache, and this is fraught with consequences in the form of various errors.
To fix this problem, you need to delete all data services and cache. This is done as follows:
- We go into the phone settings, go to the "Applications" menu on the "All" tab.
- Next in the list we find the Google Services application and click on it.
- In the window that opens, immediately click on the "Clear Cache" button, and then on the "Manage Location" button.
- In the window that opens, at the very bottom, click on "Delete data", confirm the action and wait for the end of the process.
- As soon as everything is completed, we reboot the device and use it.
Google account error or sync
Another reason why an "unknown installation error appears: code 24" - a violation in the synchronization or operation of the Google account tied to the phone. It’s hard to say why violations occur, there can be many reasons. But this is not the main thing, the main thing is that all this contributes to the appearance of errors.
The problem is fixed quite simply - you need to untie your account from the phone, reboot the device and bind it again.
Google Play Malfunction
The next reason why an “unknown installation error appears: code 24” on Android is a violation of Google Play. Malfunctions can be caused due to a system failure or due to an update to the application itself.
In this case, you can solve the problem like this:
- We go to the "Applications" menu on the phone, the "All" tab.
- In the list we find the Google Play application and click on it.
- In the window that opens, click on the "Clear data" and "Clear cache" buttons in turn.
- After these manipulations, you must restart the smartphone. It can be used.
If the usual Google Play cleaning didn’t help, then most likely the application update is to blame, and it should be deleted. This can be done simply - we perform steps 1-2 mentioned above, and in the open window we click not on the cleaning, but on the button on the top - "Restore the previous version".
Incorrect program removal
Well, the last reason why there is an “unknown error when installing the application: code 24” & ndash - incorrect removal of the application. When a user uninstalls a program or game, he may accidentally interrupt the uninstall process, which will negatively affect and contribute to the appearance of error 24.
It is not always easy to solve the problem in this case, since for most manipulations root-rights are necessary. If they are, then you should use the SD Maid application, which will clean the system of garbage and residual files of remote programs.
If there is no root, then CCleaner for Android, Clean Master, or resetting the factory settings can help.