Error Message - Missing Fonts

When you open a document that is missing fonts, you can permanently turn off all missing font warnings for that document and all other documents you open in the future that are missing fonts.

In the missing fonts dialog box, first select Don't show again and then select Temporarily replace all missing fonts.

The missing fonts dialog box automatically dismisses itself after a configurable time that you specify in Tools > Options > System Options > Messages/Errors/Warnings > Assemblies > Automatically dismiss reference and update messages after n seconds. If the dialog box automatically dismisses itself, the document uses the Temporary replace all missing fonts option.