At the first, please exit EDIUS then try accessing the URL below with Microsoft Edge from the EDIUS PC:
https://ediusworld.com/support/UpdateInfo/edius11ver.xml
You should be able to see below page in the Microsoft Edge:

If the browser fails to open the page, it is actually network connection issue. If the browser opens the page and shows an XML document, it is another issue that we are investigating now. Please try below items.

1. After opening the XML page above, launch EDIUS and try it again. There are cases that it fixes the issue.

2. If the above does not solve the issue, confirm if current build is the latest (details here). If older build is running, please open the EDIUS download page in your web browser to get the latest installer.
Use below link to visit the download pages for each generation of EDIUS:

EDIUS 11 download page
EDIUS X download page
EDIUS 9 download page

Related Content

• What EDIUS edition / version am I using?