To get the Microsoft SharePoint icon back, you need to follow these steps¹:

1. Right-click the SharePoint shortcut and choose Properties.
2. In the Shortcut section, click Change Icon.
3. Choose the SharePoint icon and click OK to change it.

Microsoft SharePoint has several icons that indicate different things². For example, the glimmer marks (three little blue lines) seen next to a file or folder indicate that the file is new. The OneDrive icon with sync pending arrows indicates that the file is being synced. The yellow exclamation mark OneDrive icon indicates that there is a sync issue. The blue cloud icon indicates that the file is available online-only. The green tick icons indicate that the file is synced and up to date. The solid green circle with the white check mark indicates that the file is available offline. The padlock icon indicates that the file is shared with specific people.