Sorry we can't open the document

Hi, 

Apologies for double posting this - there's a thread here https://community.adobe.com/t5/adobe-xd/invite-to-edit-sorry-we-can-t-open-the-document/td-p/10409941?page=1 ...bit it's lost away in the replies...

...We're having this problem across our organsiation at the moment - it is causing massive problems.

Everything was fine until last week. Now we cannot effectively share documents across the distributed (Enterprise) team. I really really need a solution v.quickly - being strongly pushed to move to different software (which i don't want to do) but am swimming against the tide here.

There are multiple accounts associated with each persons email address. This is a result of the organisation moving from std licensing to enterprise licenses with single sign-on integration.

• When I enter a user's email 2 entries appear 
• These used to highlight which was associated with an enterprise license in brackets - now it doesn't

We've spent hours and hours trying different solutions and suggestions and countless combinations of logging in / out of accounts to ensure that everyone is logged in to their enterprise accounts - both those sharing and those being invited. Everyone has updated to the latest version of XD

• Old file shares seem to be ok in some instances
• Newly created files will not open and we get the error message 
• The file creator can open the file fine
• Everyone invited gets the error when trying to open the doc in XD
• Invited user can download and access from their 'Shared with you' section on assets.adobe.com

Whislt downloading the files to local machines from assets.adobe.com works fine, this is not a appropriate solution - completely negates the value of working together across files or even synching files....

I need a solution quickly please.

How can we easily and quickly solve what appears to be an issue with multiple accounts?

Thanks

Liam