1. These steps must be performed on the computer that the License Manager is installed on.
2. Open an Administrator Command Prompt.‍
3. Copy and paste the following commands into the command prompt and press Enter twice.
   • After each command, if successful, it will return "Ok." in the command prompt window.
     
     Tip:  copy and paste all the following commands in one swoop.

netsh advfirewall firewall add rule name="Ansys-lmgrd.exe DefaultPortUsed:1055" dir=in action=allow program="C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\lmgrd.exe" enable=yes

netsh advfirewall firewall add rule name="Ansys-ansyslmd.exe DefaultPortUsed:dynamic" dir=in action=allow program="C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansyslmd.exe" enable=yes

netsh advfirewall firewall add rule name="Ansys-ansysli_server.exe DefaultPortUsed:2325" dir=in action=allow program="C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_server.exe" enable=yes

Ansys version 17 & Prior Only

Run the following commands in additional to the ones above:

netsh advfirewall firewall add rule name="Ansys-ansysli_monitor.exe -legacy rule" dir=in action=allow program="C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_monitor.exe" enable=yes

netsh advfirewall firewall add rule name="Ansys-ansysli_client.exe -legacy rule" dir=in action=allow program="C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_client.exe" enable=yes

1. These steps must be performed on the computer that the License Manager is installed on.
2. Windows Search > search for and open Windows Defender Firewall with Advanced Security
3. On the left, select Inbound Rules > on the right in the Actions Pane select New Rule…

In the New Inbound Rule Wizard:

1. For the Rule Type step, select Program> select Next
2. For the Program step, select This program path and enter the following text and then choose Next
   
   “C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_server.exe”
3. For the Action step, select "Allow the connection" and choose Next
4. For the Profile step, check all boxes (Domain, Private, and Public) and choose Next.
5. For the Name step, enter an appropriate name, such as "Ansys - ansysli_server.exe", and select Finish
6. Repeat the process outlined above for these additional applications:
    

"C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansyslmd.exe"

"C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\lmgrd.exe"

 Ansys version 17 and Prior Only

"C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_monitor.exe"

"C:\Program Files\ANSYS Inc\Shared Files\Licensing\winx64\ansysli_client.exe"

You only need to allow the applications or ports through the firewall, not both.  We recommend allowing via application rules on the license manager machine, whenever possible, for simplicity. However, if the license manager is installed on Linux or the computer is using s 3rd party software firewall (non-windows) or if there is a hardware Firewall/VPN/Router between the client machine and the license server machine that is blocking traffic over the default ports, it may be easier for your IT Administrator to allow ports instead of applications.

Allow by Application

• [Ansys Install Location]\Shared Files\Licensing\winx64\ansysli_server.exe
• [Ansys Install Location]\Shared Files\Licensing\winx64\ansyslmd.exe
• [Ansys Install Location]\Shared Files\Licensing\winx64\lmgrd.exe
• Ansys version 17 and before only:
  • [Ansys Install Location]\Shared Files\Licensing\winx64\ansysli_monitor.exe
  • [Ansys Install Location]\Shared Files\Licensing\winx64\ansysli_client.exe

Allow by Ports

• 1055 (lmgrd.exe) - Required for FlexLM communication
• Dynamic port (ansyslmd.exe) - Required for Ansys Vendor daemon communication, ansyslmd.exe 
  • You must assign a static port for this service in your license file. See HOW TO - Assign Static Vendor Daemon Port (ansyslmd.exe)
• Ansys Version 2020R2 and Prior Only
  • 2325 (ansysli_server.exe) - Required for Ansys Licensing Interconnect communication.