Official documentation
Privacy FAQ for Microsoft Copilot
Microsoft Support, 2026
Read the originalRead on October 16, 2026
- What it is
- Microsoft's frequently asked questions about Copilot privacy. It states how long conversation activity is kept by default and which Copilot data, including voice conversations, Microsoft uses for AI training unless a user opts out.
- How much weight it carries
- Official Microsoft documentation. It describes default behavior for consumer Copilot accounts. Microsoft changes these terms over time, so check the current page before relying on a figure.
Facts taken from this source
- Microsoft says it stores Copilot conversation activity for 18 months by default, and that you can delete individual conversations or the whole history at any time.
“By default, we store conversation activity for 18 months.” (How long are my Copilot conversations saved for?)
- Microsoft says it uses data from Copilot, including voice and conversation activity, for AI training, except for certain categories of users or users who have opted out.
“This includes de-identified search and news data, interactions with ads, and your voice and conversation activity with Copilot” (Does Microsoft use my data to train AI models?)
Pages that rest on this source
- Is Voice to Text Safe? How to Dictate PrivatelyGuide
- Voice Data Retention: What Apple, Google and Microsoft KeepGuide
- Do Dictation Apps Train AI on Your Voice?Guide
- Copilot Voice and Dictation on WindowsGuide
- Does Microsoft keep your voice recordings?Question
- What should a dictation app's privacy policy tell you?Question
- Voice Cloning and Deepfakes: Risks and ProtectionGuide
- How do you stop apps from training AI on your voice?Question