# Unable to update an apk in phone

**URL:** <https://forum.ionicframework.com/t/unable-to-update-an-apk-in-phone/157669>\
**Category:** ionic-v3\
**Created:** [February 26, 2019, 11:36pm UTC](https://forum.ionicframework.com/t/unable-to-update-an-apk-in-phone/157669 "2019-02-26T23:36:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![negarmir](https://avatars.discourse-cdn.com/v4/letter/n/fbc32d/32.png) [@negarmir](https://forum.ionicframework.com/u/negarmir)\
**Post date:** [February 26, 2019, 11:36pm UTC](https://forum.ionicframework.com/t/unable-to-update-an-apk-in-phone/157669/1 "2019-02-26T23:36:22Z")

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Hi  
I have a problem with an application which I had created using ionic 4.1.2. it was created in windows 7.  
recently I installed windows 10 and made some changes in the application.  
the problem that I have now is when I try to install new apk to update previous version, I see the following message which is good:  
" Do you want to install an update to this existing application? Your existing data will not be lost. It does not require any special access"  
It is exactly what I want.  
But when I press install button, it shows me “App not installed.” message.  
I don’t know how to find the issue and how to fix it.

Some one please help me to fix this issue. Thanks