Windows 7 Single Sign On

I have encountered the same problem in win7. I am a Chinese user and found the cause and solved it by searching in Chinese forums.

Its cause is some buggy(maybe programmed old-fashionedly) softwares that add extra entries in the right-click context menu, with a DLL as the context menu handler.

Possible causing softwares includes: NamiRobot (http://www.namipan.com/); old version Tencent RTX (http://rtx.tencent.com/)

You can check your right-click context menu and see if there are any strange items that do not belong to Windows 7. In my case it is the NamiRobot that adds one item in the context menu for all file types.

I also have these context menu items and they are fine: Adobe PDF; WinRAR; Kaspersky; WinHex; UltraEdit; EmEditor; UltraISO.

There are rumors that Sony DVD software also causes this problem, I don't know whether it is true.

So the solution is either to uninstall the software, or unregister the context menu handler DLL and remove the context menu entry.

For NamiRobot, I manually fixed in the following steps:

1. open an elevated command prompt(start -> all programs -> accessories -> command prompt, right click -> run as admin)
2. run the command: regsvr32 /u "C:\Program Files\NamiRobot\Data\NamipanExt1.dll"
3. run regedit.exe, delete the following keys:
   HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers\NamipanExt HKEY_CLASSES_ROOT\CLSID\{5696473A-FC50-4CA7-B87A-AF60201B04DD}

The three steps are enough to fix the problem. To prevent the software screwing up the context menu again, you may want to do the following: First rename the original NamipanExt1.dll to "NamipanExt1.dll.bak", then create an empty txt file in the same directory(C:\Program Files\NamiRobot\Data), finally rename the txt file to "NamipanExt1.dll".

Hope you find your causing software and fix it!

UPDATE: other softwares causing this problem:

CompareIt(according to imasu49)

CopyPathEx(according to Peter, see below)

Why, TrueCrypt!

Encrypts an entire partition or storage device such as USB flash drive or hard drive.

Using TrueCrypt Without Administrator Privileges

In Windows, a user who does not have administrator privileges can use TrueCrypt, but only after a system administrator installs TrueCrypt on the system. The reason for that is that TrueCrypt needs a device driver to provide transparent on-the-fly encryption/decryption, and users without administrator privileges cannot install/start device drivers in Windows.

After a system administrator installs TrueCrypt on the system, users without administrator privileges will be able to run TrueCrypt, mount/dismount any type of TrueCrypt volume, load/save data from/to it, and create file-hosted TrueCrypt volumes on the system. However, users without administrator privileges cannot encrypt/format partitions, cannot create NTFS volumes, cannot install/uninstall TrueCrypt, cannot change passwords/keyfiles for TrueCrypt partitions/devices, cannot backup/restore headers of TrueCrypt partitions/devices, and they cannot run TrueCrypt in portable mode.

.

System encryption involves pre-boot authentication, which means that anyone who wants to gain access and use the encrypted system, read and write files stored on the system drive, etc., will need to enter the correct password each time before Windows boots (starts). Pre-boot authentication is handled by the TrueCrypt Boot Loader, which resides in the first track of the boot drive and on the TrueCrypt Rescue Disk.

Domain access is after the pre-boot login.

However, if the user needs to change the password and the employer expects to know that password, it is a matter of the employer trusting the user/employee.