Fix problems that block programs from being installed or removed. Note: Fix problems with apps from Microsoft Store. Solution 1. Restart your PC. Solution 2. Repair or reset the app (if available) Note: Not all desktop apps support repair or reset options. Solution 3. Uninstall the app from Settings. Solution 4.

Provides links to the uninstall tools and directions for many security programs.

To have Excel prompt users to allow viewing of data types, select Prompt user about linked data types. To have Excel always allow viewing of data types, select Enable all linked data types (not recommended). This connected data type can't be retrieved or updated by this version of Excel.

To help protect your security and privacy, Microsoft Office is configured by default to block external content—such as images, linked media, hyperlinks, and data connections—in workbooks and presentations.

Learn more about why Microsoft 365 users can't open or view attachments in Outlook on the web. There are several ways to send and receive a blocked file.

Smart App Control: Use this section to configure Smart App Control, which is a security feature designed to block apps that are potentially harmful, such as those that might slow down your PC, display unexpected ads, or offer unwanted software.

Regsvr32 is a command-line utility to register and unregister OLE controls, such as DLLs and ActiveX controls in the Windows Registry. Regsvr32.exe is installed in the %systemroot%\System32 folder in Windows XP and later versions of Windows. The 64-bit version is %systemroot%\System32\regsvr32.exe.

Use the uninstall troubleshooter to uninstall Microsoft 365, Office 2021, Office 2019, or Office 2016 from your Windows PC. Select the button below to start the uninstall troubleshooter. Click Open if you get a pop-up window indicating This site is trying to open Get Help.

You've come across a file in SharePoint in Microsoft 365, OneDrive for work or school, or Microsoft Teams, but you're unable to open or share it. You can see the file is there, but it's blocked and the file has a warning icon next to it: To protect yourself, your computer, and your organization, the best option is to delete the file.

Learn how to find your BitLocker recovery key in Windows.