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How to allow MassLynx through the Windows firewall - WKB50297

Article number: 50297


Configure the Windows firewall to allow passage of MassLynx and ACQUITY executables. (Waters does not typically recommend turning on the firewall, but sometimes a company's regulatory authority requires it.)


  • MassLynx
  • ACQUITY drivers
  • Windows OS


  1. Create two dummy executable files on the desktop with the following names: WDHCPServerSvc.exe and ACQUITYServer.exe
  2. Confirm that the files are displayed with the proper extensions. If not, go to Organize > Folder and search options and in the View tab clear the selection for Hide extensions for
    known file types
    .                                                                          1_Windows_Hide_Extensions.png
  3. Open Windows Firewall from Control panel. Click on the Allow a program or feature through Windows Firewall link. Press Allow another program, which
    will open the Add a Program dialog box. Browse and open the ACQUITYServer.exe file from the desktop. Click Add.2_Allow_1.png
  4. Check the Domain and Public option boxes. Repeat these steps for adding another program: WDHCPServerSvc.exe. 3_Allow_2.png
  5. Adding WDHCP Port: Go to Control Panel > System and Security > Windows Firewall and click on the Advanced settings link to open the Windows firewall with advanced security.                                                                                                                             4_Allow_3.png
  6. Select Inbound Rules and click Action > New Rule to open a new inbound rule wizard. Select Rule Type as Port and click Next. In Protocol and Ports, select UDP
    option, Specific local ports, specify 67, and click Next.                                  5_Allow_4.png6_Allow_5.png7_Allow_6.png
  7. In the Action page, select Allow the connection and click Next. Select all of the options (Domain, Private and Public) in the Profile page and click Next.8_Allow_7.png9_Allow_8.png
  8. Finally, provide the Name and Description of the new inbound rule and click Finish. 10_Allow_9.png



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