Corrupt registry keys that control the update data. Prevent new programs from being installed. Prevent existing programs from being completely uninstalled or updated. Block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel.

Sign in to SharePoint. SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint.

Remove malware from your Windows PC. OneDrive (home or personal) OneDrive for Windows. Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC.

Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Link an account using Game Bar. Press Windows logo key + G to open Game Bar. Select Settings > Accounts. Sign in to the Xbox network (most linked accounts require it), choose a social network from the list, press Link and then follow the prompts.

Find and add an extension to Microsoft Edge. In Microsoft Edge, select Extensions, located to the right of your browser address bar. Note: If you don't see Extensions to the right of your browser address bar, select Settings and more > Extensions. Select Get Extensions for Microsoft Edge.

In Outlook, you can create one or more personalized signatures for your email messages. Your signature can include text, links, pictures, and images (such as your handwritten signature or a logo). Start guided support. Or, select a tab option below for the version of Outlook you're using.

Find solutions to common problems or get help from a support agent. By pressing submit, your feedback will be used to improve Microsoft products and services. Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

If you still need help, select Contact Support to be routed to the best support option. Admins. Admins should view Help for OneDrive Admins, the OneDrive Tech Community or contact Microsoft 365 for business support. Learn how to reactivate your account if your OneDrive has been blocked.

For OneDrive and SharePoint select the file then select Details > Manage access to stop sharing. For Lists, open the list and select the information icon in the top right corner, then select Manage access. For added security for OneDrive and SharePoint files, you can remove editing permission and turn on Block download in Link settings.