Terms & Conditions

Sales Agreement

Customers must be at least 18 years of age to place an order.

Master Key owns copyright to all website contents including logo, texts and graphical elements.

We sell only the activation key to the operating system.

Our activation keys sold are used as a system builder, supplied by authorized Microsoft partners. To comply with the terms and conditions of Microsoft, all of the items sold are new and sourced directly at the time of sale from third-party Microsoft sellers.



The company shall be entitled to alter prices to correct errors.
​All prices are in Euro. 


Payment for all products must be made in full, at the time of order, by any on-line payment method available on the website.
The company will not deliver any product before the transaction has been authorized.


·     25-Digit license codes in format: (XXXXX-XXXXX-XXXXX-XXXXX-XXXXX)

·     Installation instruction without BOX & DVD


Shipping:Electronic Delivery


Delivery time:12 hours.


Cancellations and Refunds


Once you have received a product key by email, or other means of digital delivery the company will not accept its return. It is customer responsibility to install correct software and purchase correct product key.

We only refund or replace (the new key) if we get proof of 2 screenshots to : keymasterk2019@gmail.com

The first one shows that the key doesn't work in phone activation.

The second screenshot, shows a chat conversation with Microsoft that indicates the key isn't working.
Afterwards, we refund within 24 hours.



Installation of the software is entirely customers' own responsibility.