Why does Backup work rarely

This is a subject that I feel honour bound to bring up. I have used NT for about 14 years - in that time i have had several occasions where a crash was so bad i had to use a backup. Or i wanted to keep a copy on another laptop so i just use backup. It works 1 time in 10. And it gives nonsense responses like, to continue the backup would corrupt your installation. It doesn’t help me resolve the issue.

I would love some feedback from NinjaTrader on this.

And for the record the NT versions are the same - and as I say randomly it will work, but mostly it does not. I have a workaround but by now I would have thought it was a solvable issue for NT8.

Just make a copy of the folder Documents\NinjaTrader 8 and replace the entire NT8 folder with your working backup if you run into any problems.

I use robocopy every day to back up my entire User folder which includes the NT8 folder.

Do something like this with these switches:
robocopy “C:\Users\YOUR_USER_NAME\Documents\NinjaTrader 8” “D:\NinjaTrader 8” /MIR /XJD /XD /R:1 /W:1 /MT:128 /NP /tee /NFL /NDL /NS /NC /NP /LOG:“C:\Robocopy Command Files\LogFile.log”

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For backups I use KopiaUI, backup restore utility with simple UI.