File transfer of large files suddenly stops

Dear community and Microsoft support team,

since the release of Windows 8, I'm experiencing a strange issue on my SATA3 1TB HDD (I can specify the exact model if needed), running in AHCI mode.

When copying or moving larger files (starts with files of about 50 MB or more), the file transfer suddenly stops - the transfer rate goes down to 0 bytes/s.

I can't even pause or cancel the progress. The button then just grays out and I can only kill the explorer.exe to get this file task away (it stays there - and if I start another action it just gets joined in the file tasks window below the frozen task.

Here's an image. You can nicely see the sudden stop of the file copy action.

On the left side the progress just froze. It will stay like that _forever_. I tried waiting 2 days because the computer was running anyways. Nothing happened.

On the right side I tried to cancel it, but the buttons just gray out and the label says "Cancelling" - this will also _never_ happen. The other controls react normally to user input (e.g. hiding the details), but the buttons are disabled _forever_. The only way to get rid of this frozen task is to kill explorer.exe.

• I experienced this problem on my and another pc in my old home.
• I experienced it with different fresh and old Windows 8 installations on my current PC (very annoying after copying files back on a fresh Win8 install - it freezes even there).
• It doesn't matter if this happens on local disks or over the network.
• It doesn't matter if details are shown or not.
• I also experienced this on Windows 8.1 Preview on my laptop.

Thanks for any help in advance. If you need additional details, feel free to ask me.