I just upgraded to Nougat and noticed that my SD card wasn't listed in storage. I performed the following to try to troubleshoot it:
Step 1: Force Reboot The Device
Step 2: Clear System Cache Partition
Step 3: Remove Your SD Card And Reinsert
Step 4: Make A Backup Of Your Files To Your Computer/Laptop Then Format SD card
External storage not visible in My Files (SD card not inserted) or storage settings
Step 5: Use Another SD Card Or Buy A New One
Bought a new SanDisk 64 GB Micro SD. My computer can see it ok. Used it to format the micro SD card. Reinserted it into the phone and it is still not visible.
Step 6: Factory Reset Your Device
SD card is still not visible.
Any other ideas?