EOS R10 rejecting all SD cards except for one

[Topfi]

Hi my canon r10 is rejecting all my sd cards except for one!

I have Sandisk extreme 64gb sdxc v30, Sandisk extreme pro 64gb, Sandisk ultra 64gb (micro), sandisk ultra 32gb, and sandisk 8 and 2 gb blue cards. Now my r10 can only shoot in the 32 gb. When i plug the other sd cards it just says "card cannot be accessed, reinsert or format blablah"

I cant even format those cards inside the r10, but they work perfectly fine in my 7d m2 and my pc. Note that i bought the extreme PRO alongside the r10 and it also doesnt work. I dont know what to do. 

[kvbarkley]

First, ditch any micro cards.

You can try to look inside the card slot and see if any of the fingers are bent.

IIRC, the larger cards use an extra set of pins, it could be that those are damaged leaving you with only the lower capacity cards. 

[ebiggs1]

"First, ditch any micro cards."

Most of the time I don't think you can damage the contacts in the SD slot but if you used the micro adapter that is a real possibility. Damaged contacts. For your sake I hope that isn't true. I am afraid you need to call Canon and set up a ticket to have it examined. 1 (800) 652-2666

[ebiggs1]

"You can try to look inside the card slot and see if any of the fingers are bent."

You can try to straighten bent pins. But the pins are very thin and you can snap them completely off in a heartbeat. And that will require a much more expensive Canon repair.  If you try make sure you remove the battery first because you could short out the pins which would damage the MB.

[TomRamsey]

Are the cards all UHS1 or UHS2?  where did you buy the cards? unfortunately counterfeit cards are common and may be a much lesser card than labeled.  You really should not use any card that needs an adapter, it’s just an extra thing that can go bad.