When trying to backup my files using the norton 360 I get an error message that says there is not enough backup space for backup set. I don't know if I need all the things that norton 360 is backing up but I don't want to get rid of something important but i don't need things that are taking up disc space that i don't need. Online Storage is 604 mb aand the backup set size is 2.9 GB. How can I create more space on my disc without having to purchase addttion space?
Welcome
You cannot 'create' more space, but what you will have to do is trim the size of your backup. I do not use 360, but I know you have to look in the area for setting up your backup. Look for the 'What' section of the setup. Then look at the 'Preview' backup. Then check any files you do not want to back up. Do this until you get the backup size down to where it will fit.
If that does not help, you will have to purchase more online space, or switch to another location for your backup. Maybe a USB external drive.