This scanning occurs with all versions of Office documents and could result in a delay of up to 1 second per document. This helps the active Antivirus product to detect malicious documents that obfuscate malicious content by employing techniques like document encryption. In Windows 10 Fall Creators Update, the active Antivirus product can dynamically scan Office documents via the Antivirus API for Office when you open them. Office documents open slower after Windows 10 Fall Creators Update If these workarounds don’t resolve your problem, use the options at the bottom of this page for support. In the meantime, please use the following workarounds to fix the problems. We're working to fix the issues that may come up when using Office with Windows 10. Internet Explorer 11 is a component of the Windows operating system and follows the Lifecycle Policy for the product on which it is installed. Please note that Internet Explorer 11 will remain a supported browser. Microsoft 365 apps and services will not support Internet Explorer 11 starting August 17, 2021.

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