A rather unfortunate bug has emerged in Windows 10 that means if you have more than 512 apps on your start menu, some will go missing.
The Register reports that all of the shortcut files are still stored in the same place on Windows 10, but now the Start Menu app itself appears to be driven by a different database - and its coders have limited it to 512 entries.
It is presumably significant that the limit is 512 - which as a power of 2 is significant in computing.
The good news is that a journalist has made Microsoft aware of the problem, with programme manager Arunjeet Singh apparently saying:
"The issue seems to affect people with more than 512 apps in their "All apps" list.
"To tell whether you're one of them: 1. Bring up the Start menu and search for Windows Powershell. 2. Run Windows Powershell. 3. Run the command "Get-StartApps | measure" (without the quotes) in the command window.
"If you see a number larger than or equal to 512 you are affected by this issue. We are working on a fix to this issue."