I was/am curious about Windows encryption so I chose a 1Tb folder and ticked "Encrypt"....
I thought it would take a few minutes or, worse case, a couple of hours - tops.

2 hours came and went....
I couldn't stop it in limbo so I let it run to conclusion. About 20 hours later it stopped
I thought it was neat that no other account (User) could access the files in the encrypted folder but I soon got bored with the exercise so started the decryption phase. Expecting to run as long I went to sleep for the night. ( know! I know! I shouldn't "play" with "live" data. I should have used a "test" folder....)
In the early hours Windows Update downloaded and applied an "Important" update and rebooted the system
The decrypt/encrypt cycle was BROKEN 
The folder is now NOT flagged "Encrypted" and I can access some but not all the files.
I can't "decrypt" them as they are NOT flagged "Encrypted".
Any bright ideas how to find which files are which without trying to access each and every one?
Any ideas how to decrypt the still encrypted files?
Live and learn
I thought it would take a few minutes or, worse case, a couple of hours - tops.
2 hours came and went....
I couldn't stop it in limbo so I let it run to conclusion. About 20 hours later it stopped

I thought it was neat that no other account (User) could access the files in the encrypted folder but I soon got bored with the exercise so started the decryption phase. Expecting to run as long I went to sleep for the night. ( know! I know! I shouldn't "play" with "live" data. I should have used a "test" folder....)
In the early hours Windows Update downloaded and applied an "Important" update and rebooted the system
The folder is now NOT flagged "Encrypted" and I can access some but not all the files.
I can't "decrypt" them as they are NOT flagged "Encrypted".
Any bright ideas how to find which files are which without trying to access each and every one?
Any ideas how to decrypt the still encrypted files?
Live and learn

My Computer
- Computer Manufacturer/Model Number
- self built (Desktop) HP dv6 (Laptop)
- OS
- Windows 7 Professional x64 (Desktop) Home Premium x64 (Laptop)
- CPU
- i7 870 (Desktop) i7 2630QM (Laptop)
- Motherboard
- GA-P55A-UD7
- Memory
- 8Gb 2000 (Desktop) 8Gb 1333 (Laptop)
- Graphics Card(s)
- ATI HD5770
- Sound Card
- On Board
- Monitor(s) Displays
- Kogan 32" LED LCD TV
- Screen Resolution
- 1920 X 1080 (Desktop) 1366 X 768 (Laptop)
- Hard Drives
- 2X3Tb, 4X2Tb, 4X1.5Tb, 2X750Gb and 640Gb, 1Tb plus 1.5Tb portable externals :)
- PSU
- Antec 750 True Power
- Case
- Antec Dark Fleet DF-85
- Cooling
- Hybrid Silent Pipe
- Keyboard
- Logitech Cordless Desktop MX 5500 Revolution
- Mouse
- MX Revolution
- Internet Speed
- ADSL2+