How to let win8.1 Enterprise Edition keep the original installer and files after upgrading win10

Win8.1 Professional Edition system can save the installation program and file data in the system after upgrading win10 system, but some users report that after win8.1 enterprise version upgrade win10 can not retain the programs and files in the system, then how do we to make win8.1 enterprise Edition upgrade win10 installer retention under the original system? Here we take a look at the method it!

win8.1 enterprise Edition is scheduled Win10 does not support system and online upgrades.
Solution
1, download Win10 Enterprise Edition official version of ISO image;
2, extract the downloaded ISO file;
3, run Setup.exe to upgrade Win10 system and can retain the original Software and data.
About the activation problem, the Microsoft community said:
Download the Windows 10 Enterprise Edition installer to retain the data upgrade, but the volume license version is different from the retail and OEM markets, can you get the Windows 10 Enterprise Edition installation? The program depends on whether you or your company has purchased the New Product Versions of the Volume Assurance SA (Software Assurance). If you have purchased it, you can upgrade to Windows 10 for free. If you don't have it, you can't upgrade it for free.
When Win10 is upgraded in Win8.1 Enterprise Edition, it is not as simple as Win8.1 Professional. All enterprise users should back up your important files as much as possible during the upgrade to avoid errors during the upgrade process. You bring unnecessary losses!