

Unless otherwise specified, the instructions apply to Windows 10 and Microsoft Word versions 20. Step 5: Click OK to save changes in the Trust Center window.

Now uncheck the box: Enable Protected View for Outlook attachments. Step 4: Click Protected View in the left pane. In this way, you will gradually eliminate the causes and remedy them. Step 1: Open Microsoft Word Step 2: Go to File -> Options Step 3: Click on Trust Center in the options panel, then click on Trust Center Settings. If you haven’t made any deliberate changes and the problem appears to be unfounded, try performing the following suggested solutions in the given order. Damaged installations and files: If you’ve newly installed Microsoft 365 and Word won’t open the installation itself is possibly damaged.Windows updates and upgrades: Have you recently switched up your operating system to Windows 10? Then problems that occurred during the upgrade or update might be the reason for why Word won’t open.If Word does not launch after you install an add-in, this is most likely the cause. Word add-ins: Add-ins are extensions and offer practical additional functions for the word processing program.It is easier to check the most common errors and correct them if necessary. For many cases, this behavior causes the Office client code to prompt for sign-in so that the user can supply credentials to open the file because authentication failed.Word won’t start, but you can’t figure out why? In fact, it can be very difficult to find the cause if the program does not display an error message. If the user is a pass-through user, the Conditional Access validation code servicing doesn't have a way to satisfy the challenges, and so the request fails. If the guest user ( is explicitly invited and the invitation is redeemed, is provisioned in the resource tenant. Most Conditional Access challenges require that the user is provisioned in the resource tenant ( ). If has Conditional Access requirements, this authentication may fail. The domain where the content is created is configured to have Conditional Access requirements.įor example, protects content and sends it to To access the protected content, has to authenticate to to obtain the key to decrypt the content.Your environment is configured for cross-domain authentication.This behavior occurs when the following conditions are true: This symptom is usually that you are prompted to sign in but your credentials don't work. Additionally, you're prompted to sign in, but you still can't access the content when you should be able to access to it. When you try to open an Information Rights Management (IRM)-protected document, workbook, email message, or other item, you discover that you don't have access to the item even though you correctly signed in to Microsoft Office.
