Thumbnails in Windows
It turns out that Google has changed the way that Android phones mount through USB, they now don't offer MCP but only MTP mounts, which means Windows doesn't see them as a drive and so doesn't index them.
In order to still see the files you can install a webdav server and mount that using File Explorer (add a network location)
Windows defaults the limit of downloads to 50MB and uploads to less than 30 minutes. Users can adjust these settings to increase the size and/or timeout as needed.
Note there are two separate settings, one to handle uploads and the other to handle download. Additionally, while the link below refers specifically to Windows 7 **, it applies equally to Windows 8 and Windows 10.
To solve this Problem customize the following Registry Entry: 1.Click Start, type regedit in the Start Search box, and then press ENTER. 2.Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters 3.locate the DWORD FileSizeLimitInBytes 4.On the Edit menu, click Modify. 5.In the Value data box increase the Value of 50000000 (in bytes) 6.Exit Registry Editor. 7.Restart the Web Client Service
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRxDAV\Parameters 3.locate the DWORD FsCtlRequestTimeoutInSec 4.On the Edit menu, click Modify. 5.In the Value data box increase the Value of 1800 (Decimal) 6.Exit Registry Editor. 7.Restart the Windows 7 Client