The status of this response is Pending and require some modification by the author.
Follow the procedure mentioned below:
- Press "windows+R".
- Type "services.msc" and press enter
- Search "quick update service"
- Right click -> properties -> start
It will start any service that have stopped.
"Definition files not found", issue basically occurs if Update module is unable to establish the connection with the update server due to which updating downloading gets failed.There are various reasons like:
- ISP (Internet Service Provider) Side issue: If there is massive network dis-connectivity, it results in failure while connecting to the update server.
2- Network restriction due to third party application e.g. CC Proxy, Network Firewall etc.
- Malware/System dependent: Sometimes, preexisting malware may accountable to restrict update module from being connected to update server.
- For ISP (Internet Service Provider) Side issue:
- Open the Quick Heal, click on Settings -> Automatic update. "Download from Internet" option to be selected.
- If there is slow or weak internet connectivity, then check by ping to Quick Heal domains. In command prompt, type "ping dlupdate.quickheal.com" and then press enter.
- If you get outputs as Request timed out, Destination host unreachable, then kindly try to update the Quick Heal with better internet connection.
- For Network restriction due to third party application:
- 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. Retry for update once.
- If using Network Firewall or web proxy applicaiton, need to allow servers of Quick Heal
File Extensions to allow/exclude:
If error exist visit or contact Quick heal support.
Hope this helps.