[SOLVED] Cannot disable External SD Card Encryption under any circumstances... Why? topic

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I stupidly encrypted my SD Card. This resulted in slower startups as it always searches for errors, and notifies me that it's encrypted, plus it's slower to view, load and transfer any files associated/on the External Card.
Worst of all, for some reason I cannot disable the encryption. On my friend's phone she has the option under Settings > Security > Encrypt SD Card > Disable Encryption. I however, do not have that option and I have no idea why

Here is a picture of the screen I get instead:



I only have the option to change my screen lock type. When I go to do this and put my current password in, I get this:



All other forms of secure lock screens are disabled except for password.

I've googled around on the internet and I cannot find any answers for this problem.

I've tried:

1. Disabling everything that is set as a device administrator. Rebooting and seeing if I can disable External SD Card Encryption. > Didn't help at all.
2. Formatting the SD Card after taking the files off. > Encryption is still on and I cannot turn it off.

Whilst doing this I always made sure I had more than 80% of my battery on my phone.

Does anyone else have any ideas? It's really annoying to have to use a password all the time, it's a little excessive in addition to the huge performance hit I get when interacting with stuff on my External SD Card.

I'd happily /thank anyone who can help me out.

EDIT: I spent 3 days trying to work this out, and googling around. I then also had to put up with it for 10 days.
Simply to find that all I had to do, to get the option to disable the encryption and get all of my options for lock screens back again was just set a password WITH A NUMBER in it...
Then after that, the option to disable encryption appeared and voilá. Finally I get my fingerprint lock screen back and my External SD is Unencrypted...

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Written by dd

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