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I'm trying to make a second login from my android device to my Facebook application.
I have already calculated the hash key with the following code: https://stackoverflow.com/a/26450047/1801688

I succeeded to make the first login (registration) to the FB app. Then i logged out. Now when i'm trying to log in again i'm getting the "invalid key hash error", like this:
enter image description here


If i go to the user Facebook setting and remove the application, then i can log in again and blocked again on the second try.

I also tried the hash calculated over the key: "~/.android/debug.keystore" and it made no difference.

I'll be happy to get some suggestions here. Thanks.

Community
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Benaya
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3 Answers3

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Verify if you've done the following

Generate your keyhash using keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64 androiddebugkey is the default alias. The default password is android .It should then ask for a password. Make sure that all the above arguments are correct otherwise it will generate a different hash

Paste this keyhash in the settings tab of the facebook developer console of your app.

In case even after doing this you get the same message verify that the key shown in the error message is the same as one generated by keytool

ashkhn
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Just Replace The Error Key Hash With Your Application Key Hash i.e...in https://developers.facebook.com/app application...!

Alexei - check Codidact
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Ambilpura Sunil Kumar
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Easy, delete Facebook app and run project app again

Nguyễn Thị Minh Ngọc
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