Hi,
Thank you for choosing Windows 8!
I can imagine how frustrating it could be when the apps don’t download or update. I will try and guide you accordingly to fix this issue.
Do you get any error message/code?
I would recommend you to follow the below given methods and check if it helps
Method1: I would recommend you to run the app troubleshooter and check if it helps
Refer:
What to do if you have problems with an app
http://windows.microsoft.com/en-us/windows-8/what-troubleshoot-problems-app
Note: Run the troubleshooter that is mentioned at the end.
Method2: Reset Store cache and check.
From the desktop:
Press Windows + R keys
Type "wsreset.exe" on run window and press enter.
It opens the store to reset the store cache.
If the issue still persists
Method 3: Put the computer in Clean Boot state to see if there is any software conflict as clean boot helps in eliminating software conflicts.
Refer:
http://support.microsoft.com/kb/929135
Note: After performing the troubleshooting steps in clean boot, follow Step 3 from the link to return the computer to Normal startup mode.
Also refer:
http://windows.microsoft.com/en-US/windows-8/why-find-install-app-windows-store
Hope this information will help you.
For any further assistance, reply to us and we will be happy to help you.