# Publishing AAB file for replacing APK file doesn't work

**URL:** <https://community.thunkable.com/t/publishing-aab-file-for-replacing-apk-file-doesnt-work/1764067>\
**Category:** Questions about Thunkable X\
**Created:** [March 2, 2022, 6:56pm UTC](https://community.thunkable.com/t/publishing-aab-file-for-replacing-apk-file-doesnt-work/1764067 "2022-03-02T18:56:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dosantoss](https://avatars.discourse-cdn.com/v4/letter/d/d2c977/32.png) [@dosantoss](https://community.thunkable.com/u/dosantoss)\
**Post date:** [March 2, 2022, 6:56pm UTC](https://community.thunkable.com/t/publishing-aab-file-for-replacing-apk-file-doesnt-work/1764067/1 "2022-03-02T18:56:39Z")

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Hi,

I’ve tried to publish the aab file of an app that is already published on Playstore (based on apk file), but it doesn’t work.

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/d/2/d229ae3cc2874989f05b074f00ff13fe745fccfd.png)

The problem when I try to activate app signing on Google Play console is that the private key doesn’t match the certificate of the app (I’ve followed instructions in this link, even tried to upload output.zip [Publish to Play Store (Android) with AAB - Thunkable Docs](https://docs.thunkable.com/publish-to-play-store-android#upload-your-aab-file)).

When I tried to upload my app with an apk file, it works. So I don’t understand what’s worng…

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0f59f292712368bce16ff80133ae10de8a6f27e8.png) [@system](https://community.thunkable.com/u/system)\
**Post date:** [May 31, 2022, 6:57pm UTC](https://community.thunkable.com/t/publishing-aab-file-for-replacing-apk-file-doesnt-work/1764067/2 "2022-05-31T18:57:31Z")

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