Mitsubishi Electric Melsensor CF37-SR Settings Manual page 23

■ When a warning message appears
A warning message may appear, which indicates that a function of DataMan Setup Tool is blocked by the Windows firewall.
Select the checkboxes of "Private networks" and "Public networks," click the [Allow access] button, then continue the
operation.
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■ When communication with DataMan Setup Tool is not allowed by a firewall
When a firewall is enabled and communication with DataMan Setup Tool is not allowed, a code reader may not be recognized
since communication is not possible.
To allow the communication in the Windows firewall, refer to the procedure below.
When using other software with a firewall function, refer to the manual of the software and allow the communication with
DataMan Setup Tool.
The following shows the procedure for Windows 10.
Operating procedure
Select [Control Panel]  [System and Security]  [Allow an app through Windows Firewall] from Windows Start.
5 CONNECTING with SetupTool
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5.2 Starting SetupTool