OS Monterey 12.0.1 - SanDisks Have Stopped Working

Since upgrading my MacBook Pro to OS 12.0.1 Monterey my SanDisk USB drives aren't working. When I try to access using the installed SanDiskSecureAccessV3_mac application I get "This application only runs on a SanDisk flash drive." I've reinstalled app and nothing changes. Can't access. All of the drives worked fine before the upgrade.

Posted on Oct 31, 2021 8:41 AM

Posted on Nov 4, 2021 10:54 AM

I contacted SanDisk and they say it’s their problem and they are working on a fix. Apparently they were not in sync with Apple to be compatible with the changes in Monterey. They didn’t have a date for when the fix will be released, but recommended checking their web support site where it will be downloadable.

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I contacted SanDisk and they say it’s their problem and they are working on a fix. Apparently they were not in sync with Apple to be compatible with the changes in Monterey. They didn’t have a date for when the fix will be released, but recommended checking their web support site where it will be downloadable.

My Sandisk flash-drive was also not being recognised. I went on the Sandisk website: the 'Secure Access' app no longer works with Monterey, the suggested fix was to download the 'Private Access' app (Mac and PC versions available). I have done this and now have access to my flash-drive as normal. The link to the download page: https://kb.sandisk.com/app/answers/detail/a_id/21996/~/privateaccess-support-information-and-download-page

Hope this helps.

I started another thread before I was pointed over to this topic about the problem I was having with my late model Intel Mac running Monterey 12.0.1, and I was able to confirm the problem is Monterey and not limited to the M1 architecture:

Here is the last post from that thread confirming the steps that I took to determine why the Monterey Mac was unable to get past the erasing step in disk utility of formatting the drive:

Update: I took it to Apple support and very helpful senior advisor looked over with a screen share and we verify that there was no specific finding in activity monitor or console logs that acknowledged or suggested any kind of hang process; we took it through Recovery Mode version of Disk Utility ("to get the OS out of the way") and had the same thing, where it get stopped at the erasing stage, even with setting it up without encryption.

So I fired up the 2012 Catalina Mac, and it happily formatted the drive to the point where it was mounting in two minutes or less with macOS journaled or AFPS options. Then I took the formatted drive with AFPS, not encrypted, plugged it into the 2020 MacBook Pro running Monterey 12.0.1, and it happily mounted the drive and Time Machine is now backing it up and encrypting as it goes.

This experience demonstrates that the SanDisk the problem is not based in M1 architecture, because this is a very recent Intel Mac (purchased October or November 2020) running Monterey. And this same recent Intel Mac had no problem formatting an identical twin drive for Time Machine before the update from Big Sur (which came on the computer) to Monterey.