Microsoft has released a new Office Build for Office Insiders on Windows. The new Build 12015.20004 has introduced no new features to Office apps but brings a lot of bug fixes and performance improvements. You can read the official changelog below.

What’s New

Non-security updates:


  • We significantly improved the performance of deleting columns with merged cells

Office Suite

  • We fixed an issue which could prevent some Unicode characters from being displayed when viewed in a browser


  • We fixed an issue which could have prevented files from being saved to a WebDAV location


  • We fixed an issue where a user would click on one comment, but another comment would be selected
To update to the latest Office Insider Preview Build, open any Office program and go to File > Account > Update Options > Update Now.