May 09, 2018 So far Samsung T3, T5, WD Password SSD all work flawlessly on Windows, but I still could not find anything that works on macOS High Sierra yet. It seems like the macOS software is really tricky to write since no vendor out there is capable of creating something that works with High Sierra so.
Does anyone know how to fix this issue?
Yes, uninstall the 'activation' software.

A hard drive doesn't need any software. If it is so flakey that it needs software, you should return it for something that isn't such a pile of crap.
Besides the activation software, it has also installed Paragon so that you can leave the drive formatted for Windows.
Unless you need it to work with Windows, that bundled NTFS software will likely break at various OS updates and upgrades because it is also a cheap, hobbled version of the retail software.
If you must use it with Windows and you must use their password scheme, you'll have to wait for Samsung to release a version that isn't garbage. No guarantee that won't break at the next update.

Samsung Portable Ssd Software For Mac Os Pro
Or, you can format it for the Mac as APFS or HFS+ with encryption. Then get rid of the crapware they misled you into installing.
Samsung Ssd Software Mac
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May 5, 2018 7:25 AM