SOLUTION: You uploaded an APK with an invalid signature - digest

So I have had a couple of clients contact me with recent issues with publishing and updating Google play apps.
So I have had a couple of clients contact me with recent issues with publishing and updating Google play apps. It seems there are issues with some older .keystore certs and apps and google are no longer allowing you to update the app (or sign new ones) using the algorithm SHA-256. From my research, it looks like its caused…

Error retrieving file 'Someofmyfiles.jpg': URL has - Google Cloud Community

java - Invalid signature file digest for Manifest main attributes exception while trying to run jar file - Stack Overflow

Approov Reference Guide

You uploaded an APK with an invalid signature. Error from apksigner: ERROR: MIN SIG SCHEME FOR TARGET SDK NOT MET: Target SDK version 31 requires a minimum of signature scheme v2; the

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SOLUTION: You uploaded an APK with an invalid signature - digest algorithm SHA-256 / Signature RSA — GameSalad Forums

SOLUTION: You uploaded an APK with an invalid signature - digest algorithm SHA-256 / Signature RSA — GameSalad Forums

My Android phone is not installing apk files anymore, how to fix it? - Quora

TECH] Signing with apksigner and APK Signature scheme v2 - LIAPP

Nextcloud server changelog

FIX APK with an invalid signature