Insufficient available hard drive space The VIPRE definition process may fail if the drive that VIPRE is installed on does not have enough space.
You will want to check that the hard drive has around 1GB of free space.
But then I visited their site to find a link to submit my query and within matter of minutes I got a resolution from them, you may want to use the link it is This could probably because of some error while restarting & Quick Heal could not locate new virus definitions.
Click this link on How to change Definitions update frequency.
Keep in mind that whatever setting you choose will require the computer to be left on for specified amount of time before VIPRE will check for an update.
Ref below image:3) If you get outputs as Request timed out, Destination host unreachable, then kindly try to update the Quick Heal with better internet connection.1) Check whether an applicated calls as "Internet Download Manager" is present in the system or not.
If present, remove the check-mark from Quick Heal from the Configuration settings of Internet download manager. Refer below image:2) If using Network Firewall or web proxy applicaiton, we must need to allow below servers of Quick Heal: Extensions to allow/exclude:*.dat*Scan system once and retry for update.#If the error occurred for offline update then follow the below steps:1) Kindly check if the update file is downloaded correctly as per the system type (i.e 32 bit or 64 bit) and virus database date.2) If not, then re-download the file and try for the updates.3) If yes, then extract that updates in new folder and then check its size.