Microsoft has addressed a known issue causing memory or disk space errors when opening some documents using Microsoft Word, Microsoft Excel, or other Microsoft Office apps. This known issue only affects customers who have installed Microsoft Office apps from the Microsoft Store and are trying to open an Office document that triggers the Protected View feature. Protected View is an Office feature that opens documents in read-only mode and disables most editing functions for documents received as email attachments or opened from an unsafe location (the Internet, someone else’s OneDrive storage, etc.). Only customers using Microsoft Office on devices running Windows 10, version 20H2 or Windows 10, version 2004 are impacted by this known issue. Users encountering this issue will see a “Microsoft Excel cannot open or save any more documents because there is not enough available memory or disk space” error.