Clear DNS Cache

Clear DNS Cache

Summary

Your DNS cache stores the IP addresses of visited web servers, including vivahelix.com. If the server changes, you may need to clear your DNS cache to avoid 404 errors. Once cleared, your computer will request updated DNS information to reconnect to the correct IP address.

Step-by-step Instructions

Windows 8

  1. Press Win + X to open the WinX menu.
  2. Right-click Command Prompt and select Run as administrator.
  3. Type: ipconfig /flushdns
  4. If successful, you will see: Windows IP configuration successfully flushed the DNS resolver cache.

Windows 7

  1. Click Start.
  2. Type cmd in the search bar.
  3. Right-click Command Prompt and choose Run as administrator.
  4. Type: ipconfig /flushdns
  5. Expected message: Windows IP configuration successfully flushed the DNS resolver cache.

Windows XP, 2000, or Vista

  1. Click Start.
  2. Click Run... (or type run in the search bar on Vista).
  3. Type: ipconfig /flushdns
  4. Expected message: Successfully flushed the DNS resolver cache.

macOS 10.10.4 and later

  1. Open Applications > Utilities > Terminal.
  2. Type: sudo killall -HUP mDNSResponder
  3. No output if successful.

macOS 10.10.1 to 10.10.3

  1. Open Applications > Utilities > Terminal.
  2. Type: sudo discoveryutil mdnsflushcache
  3. No output if successful.

macOS 10.7, 10.8, and 10.9

  1. Open Applications > Utilities > Terminal.
  2. Type: sudo killall -HUP mDNSResponder
  3. No output if successful.

macOS 10.5 and 10.6

  1. Open Applications > Utilities > Terminal.
  2. Type: sudo dscacheutil -flushcache
  3. No output if successful.

Note: On macOS, you must know the administrator password to run these commands.

Tips / FAQs

  • Clearing the DNS cache can fix connection issues after a server change.
  • If errors persist, restart your router or contact your network administrator.
  • Only perform this action when necessary.