: Sometimes, organizational firewalls or proxy settings interfere with the SOLIDWORKS Installation Manager's ability to verify serial numbers or download files. Adding specific block or redirect rules can occasionally stabilize these connections. Why Block or Redirect During Install?
To block these connections, copy and paste the following text into your hosts file: solidworks host file block install
ping activation.solidworks.com
: Some antivirus programs (e.g., SentinelOne or ZoneAlarm) may lock or modify the hosts file to prevent unauthorized communication, inadvertently blocking legitimate SOLIDWORKS traffic. How to Fix a SOLIDWORKS Host File Block solidworks host file block install