Corrections

Facts this site got wrong, and when they were fixed.

When a page here states something wrong as fact, the fix is recorded on this list: what the page said, what it says now, and the date it changed. Typos, dead links and wording changes go in the changelog; this page is for errors that could have misled you. Spotted one? Open an issue and it will be fixed, then logged here.

• 26 Sept 2026

  Which Copilot is which? said: the free Copilot Chat cannot open your files, and an answer drawn from your own email proves you have the paid licence. Since Microsoft's July 2026 update, Copilot Chat in Outlook can read your inbox, calendar and some files without that licence, so the test could point the wrong way. It now says: an answer from your email proves nothing on its own; check the Basic or Premium label Microsoft now shows in its apps.

• 26 Sept 2026

  Copilot Cowork, and when to hand over a whole task said: Microsoft publishes no credit figures for its light, medium and heavy task types. Its June launch post came with a spreadsheet for estimating spend from exactly that mix. It now says: Microsoft offers that estimate, and a single task's price is still only known once it runs.

• 26 Sept 2026

  Where does Copilot send your data? said: choosing a model changes nothing about Microsoft's data commitments, which hold whichever company built the model. Anthropic's models are excluded from Microsoft's EU Data Boundary and its in-country processing commitments, which is why Microsoft switches them off by default in the EU, EFTA and UK. It now says: the no-training commitment holds when Claude does the work, the EU Data Boundary does not, and which organisations get Claude switched on by default.