When you try to use a NET USE command to connect to a local LPT port, you receive:
Error 85: local device is already in use.
This will happen if the LPT port is connected to a printer share.
To fix the problem:
1. Determine if the LPT port is connected to a printer share by opening a CMD prompt and typing:
NET USE.
2. If the port is connected to a print share, type:
NET USE LPT<x> /D
where <x> is the port number.
3. Issue the original NET USE LPT<x> \\<ServerName>\<ShareName> command.
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