Solution
This is a known issue in LabVIEW 2017, 2018 and 2019 64-bit. Below is a workaround to activate the Third-Party LabVIEW Add-On.
- Uninstall the invalid toolkit from both 32- and 64-bits LabVIEW as described in Download & Manage LabVIEW Add-ons with VI Package Manager (VIPM)
- Navigate to <ProgramData>\National Instruments\Partners\<Invalid Addon>\Licenses and ensure that the *.lf file is deleted.
- Manually delete the Computer\HKEY_LOCAL_MACHINE\SOFTWARE\National Instruments\LabVIEW\<Version>\PartnerAddons\<Invalid Addon> folder in Windows registry.
- Download the attachment RegisterAddon.exe
- Navigate to <ProgramFiles>\National Instruments\LabVIEW Version\resource\Partners and replace the original RegisterAddon.exe with the downloaded attachment.
- Reinstall the desired Third Party LabVIEW Add-on.
- Use the Third Party Add-on Activation Wizard to activate the add-on.
For LabVIEW 2017: The suggested workaround might not work on a system with LabVIEW 2017 (64-bit). If you try the steps above and still have Invalid activation status, consider upgrading to LabVIEW 2017 SP1 (64-bit).
This should activate the add-ons correctly and will allow to avoid this scenario in the future.