I am using the DPAPI for encryption in VS 2005 Framework 2.0.

I am able to encrypt stings just fine, but when decrypting the
encrypted string I get the error:

"Decryption Failed: Unable to update the password.  The
value provided for the new password does not meet the length,
complexity or
history requirement of the domain. "

I am using a windows form and have tried both machine and user store.
I have created a DPAPI wrapper myself and used the ProtectedData
wrapper that comes with framework 2.0.

This used to work with framework 1.1, not sure what happend.  Any help
would be appreciated.

I was able to figure out what the error was being derived from.  The
CryptUnprotectData function is trying to open a prompt (
CRYPTPROTECT_PROMPTSTRUCT) for a password to allow the data blob to be
decrypted, but the CRYPTPROTECT_UI_FORBIDDEN flag is set so it's just
throwing the error above.

I turned off the flag and the prompt was displayed but my password
wasn't accepted so I still wasn't able to decrypt the string.  No
prompts are displayed during encryption.  So there's a little more
information.  Still looking for a solution...

I wasn't able to figure out what was causing the problem with the
sample provided by MSN, but I found different sample code that ended up
working.

DataGridViewComboBoxes for numeric fields
specify clr version
System.Windows.Forms.ColumnHeader and IDisposable
Remoting: security and app.config
Serialize a Strategy Pattern List of objects with out xsi:type.