1. This version of Windows has a few typos in the Help and Support center, such as "recieved."
2. Some Windows 8 build 7700 files (such as AudioEndpointBuilder.dll and BluetoothApis.dll and the updated dui70.dll) work with this operating system if api-ms-win-core-localregistry-l1-1-1.dll is copied to System32. However, some Windows 8 build 7746 files don't work with Windows 7, that does not include dui70.dll (however, replacing Windows 7's dui70.dll with dui70.dll from Windows 8 build 7746 is not recommended since it appears to cache MUI text).
3. If a user runs the Windows Calendar program from Windows Vista on this version of Windows, the search bar will be missing. However, there is no known fix to this issue.