Please check if the permissions on the portal page got overridden during upgrade.
– Navigate to the portal page through Folders section.
– Click on “Tools” icon on cornor-right (little right headed arrow)
– Click on “Permissions”
– Under “Manage Permissions”, add “Everyone” group and remove other groups if necessary
Now this page should be accessible without login to MWS.
NOTE: One simple way to make your portal page publicly accessible is to simply add your page under “Public Folders”. All pages under public folders are anonymous and are inherited to "Everyone group.
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