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  1. Ansys Optics
  2. Installation and Licensing
  3. Troubleshooting and FAQ

Troubleshooting and FAQ

Note: Ansys Optics 2023 R1 is the last release supporting the Lumerical FlexNet License Manager (legacy). All future releases will be running on the Ansys License manager.

  • Launching Ansys Lumerical Products with and Without Mesa Library
  • Ansys Optics - Welcome Guide
  • Troubleshooting and FAQ
  • Where can I find Ansys technical support?
  • System Requirements and Supported Platform
  • Support for MacOS ends with 2020 R2
  • Support for Lumerical FlexNet license manager (legacy) ends with 2023 R1
  • How to create or update your Ansys Lumerical user account (deprecated)
  • How to reset your Ansys Lumerical password
  • Finding your account number, entitlement, and Lumerical release information
  • How to register and access technical support on Ansys Customer Support Space
  • Accessing Ansys Optics documentation and technical support
  • Downloading the Installation package
  • How to clear Lumerical cache
  • Create or modify environment variables in Windows
  • Setting environment variable in Linux
  • How to obtain your license server's HostID information
  • Fixing common licensing errors
  • Custom installation using msiexec.exe on Windows
  • Fixing installation or licensing issues
  • What happens when you lose connection to the license server?
  • How to check license status and availability
  • How to release a stuck, ghost or abandoned license
  • Adding inbound rules to Windows defender firewall
  • Fixing common engine or run time errors
  • Ansys Lumerical product preference files
  • Getting the Best FDTD Performance
  • Determining the optimum resources to run FDTD
  • Run FDTD simulations sequentially on the command prompt
  • Installing and running Lumerical on Linux without GUI
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