User need to change sharepoint site url or site collectiion url that we call as top level site and rename the url of subsite of as well. Rename and change subsite address or url is not much difficult but change site url top level needs special attention. Renaming the site name not change the url, we need powershell to achive this. Run the below powershell command metioned below to change url of site in sharepoint.
$site = Get-SPSite http://win-q2repghf9du:44179/sites/SharePointTechnicalSupport $site.Rename("http://win-q2repghf9du:44179/sites/SPMCSE")
After running the powershell script do an iis reset.