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The WebClient service is a client prerequisite for connecting to a WebDav server. The service comes pre-installed if you are using desktop versions of Microsoft Windows. However, you need to install it as part of the Desktop Experience feature when using Windows Server 2008 and 2012.
Press WinKey + R or type into the search dialog: services.msc
Press Enter. The Services window opens.
Right-click the WebClient service.
Click on Properties. The WebClient properties window opens.
If the service is stopped, click on Start.
Change the Startup type to Automatic.
Click OK to confirm the changes.