Ran into the same issue this morning. Looks like the error is in just one download file.
Files to be downloaded: 4
Downloading update package (1 of 4) failed.
Downloading update package (2 of 4) finished.
Downloading update package (3 of 4) finished.
Downloading update package (4 of 4) finished.
Encountered an error while downloading file 1619646652jtun_ips_sep14_3_210428071-210428072.x03.
Files downloaded: 3
Processing updates...
Encountered an error while processing an update for Intrusion Prevention Signatures.
Failed to install update for Intrusion Prevention Signatures.
Installed update for Virus and Spyware Definitions SDS Win64 (Reduced) successfully.
Installed update for Symantec Allow List successfully.
Installed update for Revocation Data successfully.
Finalizing updates...
Session summary: 4 update(s) available, 3 update(s) installed.
Original Message:
Sent: 04-29-2021 08:38 AM
From: Tony Stone
Subject: IPS Signatures
Why am I seeing this ?
An update for Intrusion Prevention Signatures from LiveUpdate failed to install. Error: File not found on server (223)