Prevent your computer from going to sleep.
Keep Teams & Slack status 'Active'.
The is a critical security update addressing active remote code execution and spoofing vulnerabilities in Microsoft Office 2016 and related products. While it introduced a minor regression (PDF preview crash), the security benefits far outweigh the risks. Enterprises should test with their LOB applications but deploy widely within two weeks of release.
Using the Mso15.11.2patch carries significant risks for users and their devices: Mso15.11.2patch
While articles from platforms like CNBlogs detailed its use years ago, using such tools today is highly discouraged for several reasons: The is a critical security update addressing active
After reboot, re-check mso.dll version. It should now reflect 15.1.2.xxxx or higher. Mso15.11.2patch