trying to share folder with guest, but access denied.

OK, I'm officially frustrated.

I have anonymous sharing enabled at both the tenant level and at the site collection level. I have turned on anonymous links using PowerShell. I have deactivated Limited Access User Lockdown.

I sent an anonymous link to 800 residents in my community. I tested the link before I sent the email, and it worked for anonymous viewing for me. TWO people have responded that the link generates "Access Denied - request access" and asked me to grant access to the site. I told them that approval and login should not be required, and to try the link again. One did not respond; the other said, ""When I clicked, I got a page that said "sorry, you don't have access".  I clicked "ask for approval" box and I got notice that it was checking, then I closed it and re-opened the link and got in.  I can get in now from the original link.  I don't know exactly what is going on."  

I don't understand what is going on either. Any idea why the anonymous link fails for two out of 800 users, while apparently working for most? Something with the user's browser settings?

Please help!

Hi StephenRice,

I'm attempting to only share a folder in my Onedrive for Business, so no group connected sharing as far as I know.  I attached screenshots of my current settings.  The only discrepancy that I can perceive is the auto-expiration option at tenant level.  It is currently at 30 whereas no limit in other settings (I think).  Either way the sharing links that I created are only a couple days old.  I'd appreciate any additional input!

Cheers!

PS - I could only attach 3 items in this reply.  The fourth would have showed that the "limited-access user permissions lockdown mode" is not active.