Todo so follow the steps below. Right click on the "Mail" application and select "Uninstall" option. Once the "Mail" application is un-installed, press "Windows key + R". Select "Store" option from the list. Type "Mail" without quotes in the search box. You will find "Mail" application listed in the left panel. Now let's see how to downgrade Windows 10 Enterprise to Pro: Navigate to Windows 10 Enterprise Settings > Update & security > Activation. In the right section, click on the Change product key option. Next, input the Windows 10 Pro generic product key above into the column. Confirm the change with the Activate button. UpdateWindows installation media. Windows PowerShell scripts to apply Dynamic Updates to an existing image. This article explains how to acquire and apply Dynamic Update packages to existing Windows images prior to deployment and includes Windows PowerShell scripts you can use to automate this process. Volume-licensed media is available for Upgradeis supported using the in-place upgrade process (using Windows setup). You'll need to use the Product Key switch if you want to keep your apps. If you don't use the switch, the option Keep personal files and apps option is grayed out. The command line would be xxxxx-xxxxx-xxxxx-xxxxx-xxxxx, using your relevant Windows 10 IfWindows 8.1 was previously installed on your system and you are re-installing, you can skip the steps to enter a Product Key, if you boot from Installation media created form that ISO fileClick this link to download a tool from Microsoft to create the Windows 8.1 Installation media on a DVD or USB flash Drive. Ifyou are upgrading to 10 at least make a system image backup for two reasons. 1. Some people report they don't get the free upgrade and want to reinstall 7, 8, or 8.1 depending what you attempted to upgrade from.. 2. If you don't do the system checks and 10 is incompatible with your device and it becomes inoperable. Ifyou buy a computer with Windows 8.1 pre-installed from an official store like Dell, HP, Lenovo ETC, you can find the serial key on a sticker of your computer. If you buy a PC from an authorized dealer, then the dealer should provide the Windows 8.1 product key.If you buy Windows 8.1 on CD or DVD, you should find the product key on a card in the box. . Use these serial keys to activate your SQTQ4.

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