apple4ever said and it fixed the issue:
I found this:
The “Error 9813” alert occurs when there is an issue with the root certificate in a Keychain. Root certificates are stored in a system keychain located at :
/System/Library/Keychains/X509Anchors
These roots are used by Mac OS X system software to evaluate trust for secure web connections, secure e-mail, and other PKI interactions.
There are a few possible resolutions for this issue:
Quit iTunes, open Safari, and choose Empty Cache from the Safari Menu. Return to the iTunes Store and test to see if the issue is resolved
Use Time Machine or another backup to return to a previous working root certificate (X509Anchors)
Copy the root certificate over from another Mac. This solution is proposed in a mail troubleshooting Mail 2.0 Help Unable to verify message signature. Copy the “X509Anchors SystemRootCertificates.keychain”, and “SystemCACertificates.keychain” files from another computer running the exact same version of Mac OS X as your computer, restart, and test.
Reinstall Mac OS X on your computer.
Note: If you choose to copy over contents of /System/Library/Keychains, be certain that the computer you are copying the file over from is running the same version of Mac OS X. You can compare Mac OS X version numbers by going to the Apple () menu and choosing About This Mac.enjoy your magic machine
via Apple – Support – Discussions – Error message 9813 with new IPAD, will ….
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