After release of Windows 10 on 29 July 2015, about 16 million have PC have upgraded to it and more are being added continuously. As you may know that Windows 10 is Free for old Windows 7, 8 and 8.1 users so everyone want to enjoy this free update but lots of complaints are being heard over internet about activation issues.
To ease you in upgrading process we have made a list of common errors which appear during or after upgrading. Below here we have listed some of major errors that users have faced while they are upgrading or activating Windows 10.
Read also: How to install & Activate Windows 10 properly?
- Invalid Key Error or Activation ErrorMost reported and common error faced by new users is that they get error of activation ” Windows is unable to activate due to Invalid key ” when they install Windows 10 through USB or CD/DVD. The error number may lead to Windows blog.
This error appears due to fresh installation of Windows 10 on a PC instead of upgrading it. When you are installing Windows 10 from Windows 7 or Windows 8.1 you must Upgrade first instead of making a fresh installation. To do this you need to select option of Upgrade during installation. Then select Keep files and Setting option and proceed the installation. You must have a activated copy of Windows 7 or 8 or 8.1 in order to activate Windows 10
- Product Key cannot be used to Activate:
This error usually appears due to no previous version installed on your PC.
You need to install and activate Windows 7 or 8 or 8.1 first and then you should go through the process of activation.
- Networking Problems:
This problem arises due to internet connectivity issues
You must check your internet connection and if persists then you should restart your PC or contact you ISP.
- Incompatible PC:
This error will appear if your PC does not support Windows 10
Simply Upgrade your PC or buy a new one.
- VPN Issues:
This error may appears during upgrading process. It is usually due to connectivity issues between your computer and Windows 10 servers.
While upgrading process uninstall any VPN service you are using and also restart your pc after uninstall.
- Missing Files Error:
This error usually appears due to incomplete or missing files of Windows 10 setup.
Make sure you have downloaded every file before you upgrade. The best way is to download through Windows 10 website
- Unable to activate Windows now, Try Later
This error could be due many reasons but mostly it is due server side connectivity issues
Windows 10 server may not be too busy to respond to your request. So you should restart your pc again and retry. If persists than try after one or two days.