outlook known issues

The outlook known issues tag collects WindowsForum coverage of confirmed Microsoft defects and support advisories affecting Outlook, including classic Outlook for Windows. A recurring example is the bug in classic Outlook build 20026.20182 and later that can remove Copilot and Copilot Chat entry points, leaving the feature listed under Add Apps but unresponsive or grayed out when added manually. Microsoft has kept the issue in Investigating status and offered workarounds rather than a corrected build, so standard sign-in, licensing, and add-in troubleshooting may not resolve it. Expect practical notes on affected builds, advisory updates, and interim fixes.