This could be a problem regarding a corrupted LabVIEW.ini file.Locate your LabVIEW installation folder:
In the LabVIEW installation folder, you will find the LabVIEW.ini file. If this file has a size grater than a few KBs (red Box in the Screenshot) it’s a corrupted INI-file which causes the long start-up time.To resolve this issue, you need:
Collaborate with other users in our discussion forums
A valid service agreement may be required, and support options vary by country.