I used adaptive storage on my Sandisk Micro SD card. But some how it was not working and after some how shuffling through options, the SD was finally rendered not recognisable. I used exeternal adapter and connected to my PC. It was not recognised in the explorer but the Disk Management Utility showed it as attached. But the options to delete and assign letter are disabled as attached.
In a partition management related tool, following partions were shown.
And I am not restore SD card to previous usable format by anymeans.