I'm trying to set up an android build in Visual Studio App Center, but when trying to upload our keystore file I get the error "Not a valid keystore file". Could anyone think of a reason this could be happening? I have manually created a new keystore and that one seems to work. I can't use this though because its an existing app and would force users to uninstall and reinstall the app.
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Make sure the keystore file you are uploading has a file extension. MS appcenter doesn't like keystore files without an extension.
Name your file with a .keystore
extension before uploading it and that should resolve the problem
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Zayin Krige
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1i changed the .der extension to .keystore and it took the file. – hanzolo Jan 16 '20 at 05:20
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In my case the file did not have a name; ie .keystore, changing this to MyApp.keystore resolved the problem
![](../../users/profiles/240390.webp)
Dooie
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