I'm not always seeing my AppleTV on a corporate network

Question

My AppleTV does't always show up when I login to the corporate network.  I have setup a valid profile using Apple Configurator to push my credentials to the AppleTV so that it connects to the campus wireless.  The Apple TV is on but doesn't always show in my list of available devices.  If I reboot the laptop it usually reappears.  I am running OS 10.8.4 on an older Mac Book.

Answer 1

Read this whole message before doing anything.
Back up all data.
Quit the App Store application if it’s running.
Step 1
Hold down the option key and select
Go ▹ Library
from the Finder menu bar. Delete the following items from the Library folder (some may not exist):
Caches/com.apple.appstore
Leave the Library folder open. Try the App Store again. If it works now, stop here. Close the Library folder.
Step 2
If you still have problems, quit again. Go back to the Finder and move the following item from the open Library folder to the Desktop:
Cookies/com.apple.appstore.plist
Preferences/com.apple.appstore.plist
Test. If the App Store now works, delete the files you moved to the Desktop. Otherwise, quit again. Put back the files you moved, overwriting the newer ones that may have been created in their place, and continue.
Step 3
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Triple-click anywhere in the line below to select it:
test -d $TMPDIR../C/com.apple.appstore && rm -r $_
Drag or copy and paste the selected line — do not type it — into the Terminal window. You should get a new line ending in a dollar sign ("$"). Quit Terminal.
Test. If the issue is still not resolved, post again.