1. checkfor the current version of Miscosoft Dot net framework Intalled in System
   follow the path: C:\Windows\Microsoft.NET
	https://dotnet.microsoft.com/download/dotnet-framework/thank-you/net48-web-installer	

2. Copy the dll file to below locations: 
	1: C:\Windows\System32
	2: C:\Windows\SysWOW64
	3: Tally.ERP9 folder

3. Run command prompt as Administrator 
	a: Type---> cd\  press Enter
	b: check for the current DotNetframework Installed in system
	
           Type---> cd C:\Windows\Microsoft.NET\Framework\v4.0.30319
	c: Type---> regasm WABusiness.dll /codebase
	D: Type---> cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319
	E: Type---> regasm WABusiness.dll /codebase
		

if message shows registered successfully then it is installed