The Professional Plus edition includes the essential productivity apps: Word processing and document creation. Excel 2016: Advanced spreadsheet analysis. PowerPoint 2016: Presentation creation. Outlook 2016: Email and calendar management. OneNote 2016: Digital note-taking. Publisher 2016: Desktop publishing (Pro only). Access 2016: Database management (Pro only). Skype for Business: Corporate communication tools. Key Features and Advantages
In IT deployment and digital preservation circles, this exact version is highly sought after because: Microsoft Office 2016 Pro Plus 16.0.4266.1001 V...
This top-tier suite includes the following core applications: Outlook 2016: Email and calendar management
For organizations still using Office 2016, it is strongly recommended to plan a migration to a more modern version, such as Office 2019, Office 2021, or Microsoft 365, to ensure continued security compliance. Access 2016: Database management (Pro only)
Why does this specific build matter?
Build 4266.1001 is historically tied to released around late 2014 to early 2015, before the official RTM (Release to Manufacturing) which occurred on September 22, 2015. The RTM build was 16.0.4266.1001 ? In fact, some sources indicate that RTM was 16.0.4266.1001 indeed, but Microsoft quickly issued patches. So this build is essentially the original RTM build of Office 2016 Pro Plus.
For MSI installations of 16.0.4266.1001, updates are deployed as standard .msp files via Windows Update or SCCM (System Center Configuration Manager). Performance and Troubleshooting