External WD Drive showing read only I have WD External SSD Drive and macOS Catalina. The drive is formatted in ExFAT
Initially, I used my external drive 2-3 times and it was working fine. Suddenly today I am not able to write anything in my Drive as its showing Read-Only.
output from mount
/dev/disk2s2 on /Volumes/MUKESH (exfat, local, nodev, nosuid, read-only, noowners)

I have tried running following command but it did not work.
sudo chmod -R 777 /Volumes/MUKESH

Here is what I see in disk utility

In Get-Info section I see this.
If you can, go into Disk Utility (like you are), and use First Aid on the partition in question.  Depending on the size of your drive, it will take a while, but when it should restore write capability to your disk.
Source: I did the same thing when my MyBook 2TB was randomly showing up as read-only.