Hi wolf11706,
Welcome to the Sony Community!
The authentication error pops up when the videos were imported to your computer when you were using an older version of PMH or imported them by inserting the card directly to the computer. To authenticate them, connect the camera to the computer via the supplied USB cable. You can also try to create the disc while the camera is connected.
If this doesn't resolve the issue, please run the PlayMemories Home Initialization tool.
NOTE:
- Download the PMH add on to create discs.
- Make sure there are no other disc creation programs running on the background or set as a default (Please contact your computer manufacturer for assistance).
- Only .mts or .m2ts files can be burned to Blu ray discs.
For further information about what PlayMemories can do, please visit this link.
If my post answers your question, please mark it as "Accept as Solution". Thanks_Mitch