If the issue stems from an ISO-based installation (indicated by the "iso" in your search string), there may be a conflict between the and Click-to-Run versions of Office. Troubleshooting Microsoft Office 2016 (Build 17328
This forces the system to check Microsoft’s CDN for the latest security patches, effectively "fixing" the stuck build. 5. Security Warning: Avoid Unofficial "Fix" Downloads and hit Enter.
messages during the initial ISO mount or installation. 2. The Primary Fix: Online Repair
Before downloading third-party "fix" files—which can often be malicious—use the built-in Microsoft deployment tool to verify your local binaries. Press Windows Key + R , type appwiz.cpl , and hit Enter.