I own a 128GB Micro SD card from Sandisk which I know is perfectly fine and healthy. It is formatted in exFAt and worked perfectly with my Samsung S5. Now I bought a Samsung S7 and I replaced the card from my S5 to my S7. Since I did that my S7 running on stock Samsung Android 7.0 shows a window I have to format the card before I can use it... Off course I didn't do that since there is very important data on it. So I put it into a card reader connected to Windows which detected it as perfectly fine. I ran "scandsk x: /f" on it from within Windows and it said the file system is healthy and did not have to be repaired. After I eject it from Windows and put it into my S7... Android reads and writes it perfectly fine again... until I reboot my phone. Then the format screen shows up again. This loop keeps on going infinite...
Android 7.0: extSD is corrupted -> Windows 10: checkdsk /f: card fine -> Android 7.0: extSD reads -> Android reboot -> Android 7.0: extSD is corrupted -> Windows 10: checkdsk /f: card fine -> ...
So anyone got the same issue and found a solution?