[Update: This solution is now outdated as Microsoft retired the API used. You can now refer this article to use new Office 365 Communication APIs] A few days ago, many of the users of our SharePoint Online environment complained about not being able to access the portal and were getting a blank page when accessing on Internet Explorer. Now, since the site was accessible perfectly fine with Chrome browser, there was no way to suspect any issue from SharePoint Online side itself. First Thoughts We had implemented a redirection from an On-premise IIS site to SharePoint Online site using Smart […]