very good, it was fast and easy, I upgrade from Windows 11 Home single language to pro.

At the first I doubted about genuineness of product but after confirmation from the team about their source I purchased the key for Ms office professional 2021,Its working smoothly as this key is genuine one , after the payment they sent the details of activation through email immediately,it was hassle free activation.Thank you ,, Good service

Cheap prices and very helpful staff

one time delivery, installation help by call. fast and secure.

The product buying infotmation given by Keyslo lead to further clarification on the activation, particularly in my case. I was delighted with the Keyslo guidance by phone and mails. Keyslo offered best after-sale-support.

Easy to order. License key came promptly and it worked perfectly to update my windows 11 Home to Windows 11 Pro.

Initial problems solved through online chat .. worked as described

it was nice, 100% genuine. customer support helped me to install.

Really easy to download and the online help was brilliant. Worked out the issue i was having a rectified straight away.

Prompt delivery of a Win 11 key. No issues. 5/5.