Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel. If you're trying to remove malware, you can use Windows Security (or another antivirus tool), or you can use the Windows Malicious Software Removal tool.

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 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.

Microsoft has released new API enhancements for Windows to help developers correctly and securely load external libraries. For more information, visit the following Microsoft webpages: Download the Windows6.1-KB2533623-x86.msu package now. Update for Windows 7 for x64-based Systems (KB2533623) Download the Windows6.1-KB2533623-x64.msu package now.