List of file formats

This article is a dynamic list of all known file formats for programs that utilize Microsoft Actor or Microsoft Agent.

Official formats

This is a list of official formats developed by Microsoft.

File format	Extension(s)	Description	Icon (16x16)	Icon (32x32)	Utilized by
Agent Animation File	.AAF	Contains a Microsoft Agent 1.5 character animation. Predecessor to .ACA.			Microsoft Agent
Agent Character Animation	.ACA	Contains a Microsoft Agent 2.0 character animation. Successor to .AAF.			Microsoft Agent
Agent Character Definition	.ACD	Text file that has data for compiling a Microsoft Agent character with the Microsoft Agent Character Editor.			Microsoft Agent
Agent Character File	.ACF	Web-friendly version of the .ACS files, which depending on the version of Microsoft Agent utilizes .ACF for metadata and .AAF or .ACA for animations.			Microsoft Agent
Agent Character Preview	.ACG	Contains a Microsoft Agent character's metadata and greet animation. Used in Microsoft Office.			Microsoft Agent
Actor Character Preview	.ACP	Contains a Microsoft Actor character's metadata and greet animation. Used in Microsoft Office.			Microsoft Actor
Agent Character Structured Storage	.ACS	Contains a Microsoft Agent character. The 1.5 version of this format was an OLE container that contained an .ACF for metadata and .AAFs for animations.			Microsoft Agent
Actor Character Table	.ACT	Contains a Microsoft Actor character.			Microsoft Actor
Utopia Animation File	.ANI	Contains a Utopia animation. Also used as a preliminary format for Microsoft Agent Beta. File is very similar to the Actor Character Table and can be interpreted as such.	N/A	N/A	Microsoft Actor Microsoft Agent (beta only)
Utopia Tip File	.TIP	Contains tips that are defined in the Utopia Tip Editor.	N/A	N/A	Microsoft Actor
Utopia Animation Definition	.UAN	File that has data for compiling a Utopia Animation into an .ANI file with the Utopia Animation Editor.	N/A	N/A	Microsoft Actor
Utopia Character Definition	.UCH	File that has data for compiling a Microsoft Actor character into an .ACT file with the Utopia Animation Editor.	N/A	N/A	Microsoft Actor

Unofficial formats

This is a list of unofficial file formats developed by Microsoft Agent programmers over time.

File format	Extension(s)	Description	Icon (16x16)	Icon (32x32)	Utilized by
Frontier Character Structured Storage	.FCS	Specialized format designed to run on computers that do not have Microsoft Agent.	N/A	N/A	XP Search Assistant Rewritten
MASH Script	.MSH	Contains a script that can be generated and played back by the Microsoft Agent Scripting Helper.			Microsoft Agent Scripting Helper