Failed updates are usually caused by restricted networks, proxy settings or disk permissions. Check these in order and retry.
Common causes
Check connectivity, system proxy configuration and write permission on the install folder.
- Restricted or offline network
- Proxy or firewall blocking
- No write permission on the install folder
Solutions
Switch networks, use the offline update package, or run the update as administrator.
- Retry on another network
- Use the offline update package
- Run as administrator
FAQ
How often are signatures updated?
They update incrementally and automatically while online; no manual action is needed.
What if I never update?
The latest threats may go undetected, so keep automatic updates enabled.