Hi every one,  Yesterday i got an error in SP navation Error loading navigation: The Managed Navigation term set is improperly attached to the site, and i found the solution for it here it goes The solution : Switch back to structure navigation in site settings->navigation and switch to managed navigation again. This way, the lost attached web id seems to be written again. I hope it helps you and save your time Regards Rashid Imran Bilgrami CEO Best visualization http://www.bestvisualization.com