It looks like it's a problem with DLNA. You can disable the DLNA Shell Extension to prevent this from happening. Copy and past the following information into a text file and save it as a .reg file (.e.g “import.reg”). Then import it into your registry:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Blocked] ""=""
Restart Explorer.exe or your machine afterwards. Source