I'm having a problem with sharepoint designer. I want to connect to Sharepoint site hosted in O365. When I click "Open Site", I get prompted for credentials. I enter my credentials and I'm immedietaly asked for them again. It doesn't matter if I repeat it, or not - it's like an infinite loop.
No MFA is enabled for this account.
This account is both Sharepoint admin (global admin to be specific) and an admin for this site
I don't have any updates on my computer waiting.
I have enabled custom scripts on Sharepoint for this O365 tenant. I've waited for over 24 hours for this to work.
What is wrong, and how can I fix it?