the software for the first time, or are you having trouble finding your specific Key ID Upgrade Procedure - Industrial Sewing Machine | Brother
Receiving this error is the most common issue, but it is usually easy to resolve. If you see the message "Invalid key ID or password," check the following:
Based on the model number , you are likely looking for information regarding a Brother P-Touch Electronic Labeling System (often associated with the PT-300 series).
The PS-300B "Key ID" is not a serial number, a hardware ID, or a BIOS key. It is a piece of data that acts as a specifically for the Brother PS-300B pattern editing software.
, as the software may reject characters entered in full-width or alternative input modes. Installation Issues: