As this issue can have more than one cause, it may be necessary to try any/all of the solutions below to resolve this issue:
- Confirm there is sufficient free space and no disk usage quotas preventing LiveUpdate from writing to it's temporary Downloads folder on the %SYSTEMDRIVE% (Note: LiveUpdate can be installed to any arbitrary drive location on the systmem, but the Downloads directory is always located on the %SYSTEMDRIVE%).
- It may be necessary to free disk space by deleting the contents of the LiveUpdate Downloads folder at:
- %SYSTEMDRIVE%\ProgramData\Symantec\LiveUpdate\Downloads on Windows Vista and above
- %SYSTEMDRIVE%\Documents and Settings\All Users\Application Data\Symantec\LiveUpdate\Downloads on Windows XP
- Ensure any proxy, firewall or content filtering applications or devices are not stripping header information from FTP or HTTP traffic - especially file size header information
- Ensure any proxy, firewall or content filtering applications or devices are configured not to filter/scan LiveUpdate traffic from the following locations:
- liveupdate.symatnecliveupdate.com over HTTP
- liveupdate.symantec.com over HTTP
- update.symantec.com over FTP
- Ensure any network-based antivirus scanners are configured to exclude LiveUpdate content from scans