What to expect and where to search for the logs once doing manual update of SEPM definitions.
SEPM console without access to internet and possibility to update via liveupdate.
{01033000-3200-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win32 - 14.3 RU4 - English
{01033000-6400-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win64 - 14.3 RU4 - English
{01033000-3200-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win32 - 14.3 RU4 - English
{01033000-6400-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win64 - 14.3 RU4 - English
{03E7C203-78AA-448B-A844-3587B103EE5C}: SEPC Virus R Definitions SDS Win64 (x64) 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
{01033000-3200-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win32 - 14.3 RU4 - English
{01033000-6400-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win64 - 14.3 RU4 - English
{03E7C203-78AA-448B-A844-3587B103EE5C}: SEPC Virus R Definitions SDS Win64 (x64) 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
{0804A6AB-0A43-296F-5097-FFE2FCCB741A}: SEPC CIDS Signatures 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
{01033000-3200-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win32 - 14.3 RU4 - English
{01033000-6400-0000-0000-000001430400}: SESC AntiVirus Client Security Fix Win64 - 14.3 RU4 - English
{03E7C203-78AA-448B-A844-3587B103EE5C}: SEPC Virus R Definitions SDS Win64 (x64) 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
{01C24C71-0A43-296F-5097-FFE2CD742E9E}: SEPC Behavior And Security Heuristics 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
{0804A6AB-0A43-296F-5097-FFE2FCCB741A}: SEPC CIDS Signatures 14.3 RU4 - MicroDefsB.CurDefs - SymAllLanguages
Thus ContentInfo file contains entries that comes also from manual source. You can also apply multiple files same time - they will be extracted and processed one by one.
Troubleshooting for those actions is to review files:
2023-01-12 23:37:01.158 THREAD 44 INFO: Rapid response content will be extracted to the folder of C:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\data\inbox\content\incoming\vd645617core3sds.jdb.2023-01-12-23-37-01