Plcommpro.dll -

: Used to upload information to the device, such as adding new user PINs, card numbers, or configuring door timezones.

If the file exists on your computer but isn't working, you may need to "tell" Windows it's there. Open the as an Administrator. Type regsvr32 plcommpro.dll and press Enter. If successful, you’ll see a confirmation message. 4. Run a System File Checker (SFC) plcommpro.dll