搜出一个管用的，贴这里以供参考：
on November 18, 2013 at 6:53 AM
kalpeshpadia
1. Open Task Manager (ctrl, alt and delete) and end ApplePhotoStream.exe and
AppltPhotoStreamDownloader.exe if they’re running.
2. Go to your Users folder and navigate to the following path: C:\Users\
AppData\Roaming\Apple Computer\MediaStream\
3. Delete everything in that folder.
These files are a local cache of what has already been synced but it appears
to get stuck so deleting these files forces it to resync again from scratch.
4. Open iCloud Control Panel and make sure “Photos” are checked.
The above steps force re-downloading of images after any stuck point. It
should make sure that your newer images are downloaded. https://kalpeshpadia.wordpress.com/2013/11/14/windows-7-photo-stream-not-
syncing-after-icloud-3-0-solved/
不过貌似只有大约一半的照片传过来了。其他的不知道是因为时间不够还需要多等一会
儿，还是别的什么原因。
