Forum Discussion
New Outlook Not Working if on Windows Insider
New Outlook not working after the Friday 6/26/26 Update. Multiple Ui control failures: Can open settings at first. Then would not open after. "X" to close not working New email not working File ...
Hi, if this started right after an Insider build, I would treat it as a possible build regression. Test Outlook on the web first to confirm the mailbox is fine, then reset or repair the new Outlook app from Settings > Apps. If the UI controls still fail, capture the build number and Outlook version and file it through Feedback Hub. As a workaround, leaving the Insider build or switching temporarily to Outlook on the web may be the fastest path.