Does anyone have a simple (hopefully free) solution to copy users and permissions from an old SharePoint 2010 to a new SharePoint 2013 site? (I can move content with no issue). This could be through powershell or via a software solution, much appreciated.
As a workaround, please try doing the migration following the scenario “Convert SharePoint 2010 Products classic-mode web applications to claim-based authentication in SharePoint 2010 Products and then upgrade to SharePoint 2013”:
Also get help from this article for SharePoint migration.
Hope this helps!
Yep, I've done it with Sharegate before! If you don't mind migrating you can check out these docs: https://support.share-gate.com/hc/en-us/articles/115000597627-Copy-User-Permissions and https://support.share-gate.com/hc/en-us/articles/115000598267-Copy-Users probably the easiest/fastest way to do it and they have a free trial period too