Update: I successfully installed MCEBuddy2x 2.3.15. Not sure which step fixed the problem. But I uninstalled and reinstalled .net framework. Also, followed the instructions here someone suggested;
open cmd
type in command "net stop WuAuServ" (disable windows update)
Go to Run (you can do this by pressing Win + R) and type in "%windir%" (this command let you go to your windows system folder)
Find the folder "SoftwareDistribution" and rename it as "SDold"
Then, go back your previous command prompt and run the command "net start WuAuServ"
open cmd
type in command "net stop WuAuServ" (disable windows update)
Go to Run (you can do this by pressing Win + R) and type in "%windir%" (this command let you go to your windows system folder)
Find the folder "SoftwareDistribution" and rename it as "SDold"
Then, go back your previous command prompt and run the command "net start WuAuServ"