These troubleshooting steps get progressively more difficult and time consuming, so we strongly recommend attempting them in ascending order to avoid unnecessary time and effort.
Manually editing the Windows registry to remove invalid Error 1603 keys is not recommended unless you are PC service professional.
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.
The update frequency can be changed to fit your computing needs.Click this link on How to change Definitions update frequency.Antivirus Updates 2015, 2014, 2013, 20 - 2011 Please note that we have discontinued the offline update facility for the above versions of Guardian Antivirus.The Quick Heal Virus Definitions 64-bit allows manual update of your Qucik Heal Antvirus Pro, Quick Heal Internet Security and Quick Heal Tootal Security in case that you do not have internet connection or in case auto update fails.The size of the latest downloadable installation package is 5.6 MB.
The most popular versions of the tool 5.8, 4.5 and 3.0. The program lies within Security Tools, more precisely Antivirus.
If VIPRE is unable to update the threat definitions, this can be due to the definition files being corrupted.
This is commonly caused by intermittent or no internet access or shutting down your computer during the definition update process.
Keeping track of when and where your 1603 error occurs is a critical piece of information in troubleshooting the problem.
Below is a list of troubleshooting steps to resolve your Error 1603 problems.
Quick Heal Update Manager is a free program that downloads the updates for all Quick Heal products (Quick Heal Anti Virus Pro 16.00, Quick Heal Anti Virus for Server, Quick Heal Internet Security 16.00 and Quick Heal Total Security 16.00).