Read the related Knowledge Base article on this subject for globally excluding the protected "C:\ProgramData\TempDR" folder from NovaBACKUP:
Excluding the C:\ProgramData\TempDR protected folder from backups to avoid errors
There are certain folders which cannot be included in your file backup including a new folder that was first discovered August 1 2015; this is a folder which Microsoft has pushed to your PC, the folder is named "C:\$Windows.~BT\". This folder "C:\$Windows.~BT\" has to do with the Windows 10 downloaded files which cannot be backed up since that is a PROTECTED FOLDER which will deny access to back up files within it.
The easiest and most thorough method to use to exclude that folder from being selected for backup is to edit the "Default Exclude Filter" setting. Utilizing this method for exclusion will save you the time and hassle of editing each file backup job to exclude the "$Windows.~BT\" folder from NovaBACKUP.
To make this change to exclude that folder you will load NovaBACKUP and click on the large circle NovaStor logo button at the top left of the application, then go to Default Settings -> Advanced Options -> click on "Edit default exclude filter" -> The notepad program will open up with a text file "nsexc.ini" (this file is physically located in the "C:\ProgramData\NovaStor\NovaStor NovaBACKUP\Profiles\" folder), simply change the line under [exclude] from path.numberOfItems=13 to 14 and then add this line at the bottom as "path.item.13=?:\$Windows.~BT". Follow the example below for how your "nexc.ini" text file should look.
The example would look like this you will be making two changes:
path.item.12=?:\System Volume Information
Once done editing the file you will save it by clicking File menu and then Save and then exit notepad, or you can simply try closing the text file and it will prompt you to save if you have not. Then click OK at the bottom of the screen in NovaBACKUP's Advanced Options screen.
Next, exit out of NovaBACKUP; if you do not exit out of NovaBACKUP at least once after making this Default Exclusions change then it won't show the effect visually.
This method will affect ALL of your file backup jobs without you editing them to exclude and never attempt to back up the $Windows.~BT folder.
You could also make additional exclusions if you need to such as adding the "?:\Windows.old" folder to be excluded or any other paths you wish to add. Make sure to increment the "path.numberOfItems" variable at the same time if you do add additional paths in to exclude.