At the moment I am using SharePoint 2013, but by the end of the year we will be migrating over to Office 365. We have a Office 365 tenant at the moment and I am just getting to know the feel of it. I tried to open some sites with SharePoint Designer, but get this message ‘The folder name is invalid’, I have seen this message before with on premise when leaving in the ‘Pages/Home.aspx’ and not just using the site. I have checked in the site collection and it is set to allow SharePoint Designer, also exhausted Google Search but with no avail. In my last job I done some work on Office 365 and had no problems when creating workflows, so I am not sure what could be causing this problem. Any help would be appreciated.
None of the remedies I read online worked for me. They used to work but not anymore. What ultimately worked seems counter-intuitive and backward but, here it is:
I had to use Internet Explorer (not Edge or Chrome) and open a classic site’s library/list (or open any library list in classic mode) and navigate to SPD through its ribbon, the old fashioned way. It worked as expected (if I tried the same thing in Edge, it denied me access giving me the list of 4 reasons it wasn’t working which, of course, were irrelevant). Once I successfully opened SPD2013 for the one site in the manner, then I could type in the URL and open any site in my tenant, classic or modern, via the SPD app without issue.
To know more about SharePoint 2013 migration to SharePoint online visit O365CloudExperts.