OneNote 2016 can no longer be found on a PC where it had been previously installed as part of any edition of Microsoft Office.
When searching for OneNote 2016 on the Windows Start menu or in the Uninstall or change a program list in Windows Control Panel, OneNote 2016 appears to have been removed without the user’s knowledge or permission.
This is a known issue that affects users on Microsoft Office releases prior to version 16.0.10730.20102, where an Office update may have caused OneNote 2016 to be automatically uninstalled for those users.
Users of Office 365 Semi-Annual Channel (SAC) releases are not affected by this issue.
Note: Starting in March 2020, when you install Office 365 or Office 2019, the OneNote desktop app will be installed alongside the Word, PowerPoint, and Excel desktop apps.
If you are using a 32-bit edition of Microsoft Office:
If you are using a 64-bit edition of Microsoft Office:
Not sure which Office edition you have?
If you’re unsure whether you have the 32-bit or 64-bit version of Office, you can determine which version you have by following these steps:
Start Microsoft Word, create a blank document, and then click File > Account > About Word.
In the dialog box that opens, note whether your edition of Office is 32-bit or 64-bit.
This information appears at the end of the first line of text which confirms the product name, version, and your installed edition of Office.
Click OK, and then exit Word.
After you’ve finished downloading and installing OneNote 2016, it will be automatically associated (or re-associated) with your currently activated Microsoft Office license.