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VMWare Server and "...network name is no longer available..."

Did you ever receive following error when you try copy files between guest and host OS?

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Error Copying File or Folder
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Cannot copy <filename>: The specified network name is no longer available.

And you receive following error on the host OS?

Event Type:    Warning
Event Source:    Srv
Event Category:    None
Event ID:    2025
Date:        26.9.2007
Time:        23:24:11
User:        N/A
Computer:    <HostName>
Description:
The server has detected an attempted Denial-Of-Service attack from client \\<ClientName>, and has disconnected the connection.

Here is soluton for this problem:

Disable Denial-Of-Service attack detection

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters
3. On the Edit menu, point to New, and then click DWORD Value.
4. Type DisableDos for the name of the DWORD value, and then press ENTER.
5. Right-click DisableDos, and then click Modify.
6. In the Value data box, type 1 to disable denial of service attack detection, and then click OK.