Installation of ATLAS.ti Windows failed

I ran the installer for ATLAS,ti Windows but the installation fails. What can I do? 

ATLAS.ti requires your Windows system--including all components, such as the .Net framework--to be fully updated. As a first step, run the Windows updater and install the latest service packs and patches for your Windows version. 

Also, check if there is activity in the Task Manager. 

For further assistance, write to windows@support.atlasti.com.  Include a screenshot, a step-by-step description of your problem and any relevant additional information (especially your exact program version).