Why am I not able to upgrade to OS X Maverick?

[Naveen Nautiyal]

Not able to upgrade to OS X Maverick

Trying to upgrade from Mountain Lion to Maverick, but app store throwing follwing error on me.

We could not complete your purchase.
The product distribution file could not be verified.
It may be damaged or was not signed.

Can anyone please help me.

 

[Just_Me_D]

Re: Not able to upgrade to OS X Maverick

Try downloading via safe mode.