Fact · Dictation on Windows
18months
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.
Checked against its source on October 16, 2026
In the source's own words
“By default, we store conversation activity for 18 months.”
Privacy FAQ for Microsoft Copilot, Microsoft Support, 2026, How long are my Copilot conversations saved for?.
Open the original- What it measures
- Microsoft's answer to how long Copilot conversations are kept. The FAQ says the same period applies to uploaded files tied to a conversation.
- What it does not show
- A default for consumer Copilot. It is not clear from this page whether the period covers voice audio, which the feature table covers separately.
Source
Used to calculate
Cited on
- 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