Microsoft blames AI-written code backlog for delayed Exchange update

Microsoft has delayed a promised Exchange update and says it cannot yet give a new timeline. The company attributes the delay to a backlog of bugs introduced by AI-generated code that its engineers now have to work through.

Why it matters: This is a rare admission from a major vendor that AI-assisted coding created real technical debt rather than pure productivity gains, a useful counterpoint to industry claims (including Microsoft's own) about AI dramatically speeding up software development.