However if the All Apps button is missing from the start menu or if you want hide it then follow the given instructions below.
Method 1 of 2
This method is applicable to Pro and Enterprise editions of Windows 10 only as the Home edition doesn’t come with Group Policy Editor. If you’re on Windows 10 Home edition, please refer to the instructions in Method 2.
Step 1: Type Gpedit.msc in Start menu or taskbar search box and then press Enter key to open Local Group Policy Editor.
Step 2: Now navigate to the following:
User Configuration > Administrative Templates > Start Menu and Taskbar
Step 3: Click on Start Menu and Taskbar to see all Start menu and taskbar related policies on the right-side.
Step 4: Look for the policy named Remove All Programs list from the Start menu, and double-click on the same to open its properties.
Step 5: Finally, select Enabled to remove All apps button from Start menu or select Not configured to show All apps button in Windows 10 Start button. Don’t forget to click the Apply button.
Step 6: Sign out and sign in or reboot your PC once to see the change. You can also restart File Explorer by opening Task Manager, right-clicking on Windows Explorer (under Processes tab), and then clicking Restart option to see the change.
Method 2 of 2
Step 1: Open Registry Editor. To do so, type Regedit in Start menu search box or taskbar search box and then press Enter key.
Click Yes button when you see the User Account Control prompt.
Step 2: Navigate to the following:
Step 3: Click on Explorer key. On the right-side, right-click on the empty area, click New, click DWORD (32-bit) Value and then name it as NoStartMenuMorePrograms.
Step 4: Finally, double-click on NoStartMenuMorePrograms and set its value data to 0 (zero) to show All apps button, and set the value to 1 (one) to hide All apps button in Windows 10 Start menu.