Import-Module: The specified module 'Microsoft.Online.SharePoint.Powershell' was not loaded because no valid module file was found in any module directory.

Problem:
When trying to add PowerShell module for SharePoint online, using "Import-Module Microsoft.Online.SharePoint.PowerShell", it resulted in below error in both PowerShell console and in PowerShell ISE.
"Import-Module : The specified module 'Microsoft.Online.SharePoint.Powershell' was not loaded because no valid module file was found in any module directory."

Solution: 

• Make sure you have SharePoint Online Management Shell installed on the machine you are getting the error. You can download and install SharePoint Online Management Shell from: https://www.microsoft.com/en-us/download/details.aspx?id=35588
  
  
  You can check installed modules by: Get-Module -listavailable
• If you are getting this error in SharePoint Online Management Shell, Make sure you removed x86 version of SharePoint online management shell from your computer, and Try download and Re-Install 64bit version!
• Try running: Set-ExecutionPolicy Unrestrict once
• Run PowerShell or PowerShell ISE as a administrator