Offline files - The parameter is incorrect

There is a user that worked offline all week, his work is important and it will be hard to do it again. I am getting that error when he is trying to synchronize on my network that the parameter is incorrect. He is running Windows XP SP2. I have checked some answers from the below link but that doesnt work:
http://support.microsoft.com/kb/230738

Can anyone tell me how to recover from that error other than just clearing the cache? Thanks

Check the below articles to solve your issue:

Features and functions in version 1.1 of the Client-Side Caching Command-Line Options command-line tool

http://support.microsoft.com/kb/884739

http://blogs.msdn.com/jonathanh/arch...ine-files.aspx

Also what is the value set to in the right pane window in this key - HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\NetCache=

Thanks for the reply, the NetCache was not found under HKEY_Current_User but under HKEY_Local_Machine and the value for that key was Default / REG_SZ / Value not set.

I found some answer for this problem at - http://blogs.msdn.com/b/jonathanh/ar...16/354049.aspx. Although the welcome screen and fast user switching were off/disabled, the all important registry key had not been changed. The below key was still set to '1' when I changed it to '0' offline files stopped unchecking itself after every restart:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"AllowMultipleTSSessions"=dword:00000000


Also check "Office Documents Are Synchronized to an Offline Share Automatically"
http://support.microsoft.com/kb/817275

Thanks for the solution, I will try out the method and run the command and see if it works fine or not.