Win8 app store installer hangs can not be installed properly

Symptom:
Windows8 app store can not install the program, click on the download, the program can not download and install normally, the display hangs.
Figure:


Analysis:
when the application was suddenly forced to shut down, there is no time to complete the program to save the data, the results could lead to file corruption program was used. When the program is started again and the corrupted file has not been deleted, these corrupted files will affect the normal function of the program. Some software detects corrupted files and then automatically repairs or deletes them to keep the software running, but some software does not.
In Windows 8, if the app store is forcibly suspended at the beginning of the download due to power outages, etc., there is a chance that the app store will fail to install halfway or hang. This is solved by cleaning up the cache file. However, this method does not apply to the inability to install because the application file of the application store is damaged. Of course, this time it is more difficult to start.
Solution:
1. Clear the cache folder C: WindowsSoftwareDistributionDownload (If you can't delete it, you can delete it after rebooting, or delete it after adding everyone permission);
2. Go to the store to download.