The default certificate incorporated in SPE 7.9.2 & 8.0.0 is no longer treated as valid when communicating via HTTPS with LiveUpdate and Rapid Release servers to retrieve AV Definitions
Liveupdate:
luxds.dat location on Windows Platform:
"<PRODUCT-INSTALL-DIR>\Definitions\AntiVirus\"
"<PRODUCT-INSTALL-DIR>\Definitions\reputation\dwnlds\revoc\"
"<PRODUCT-INSTALL-DIR>\Definitions\reputation\dwnlds\symvt\"
"<PRODUCT-INSTALL-DIR>\Definitions\reputation\dwnlds\tiset\"
"<PRODUCT-INSTALL-DIR>\Definitions\"
"<PRODUCT-INSTALL-DIR>\Definitions\URLListLookup\DefDownloads\CAIC"
"<PRODUCT-INSTALL-DIR>\Definitions\URLListLookup\DefDownloads\SYM"
"<PRODUCT-INSTALL-DIR>\Definitions\URLRepLookup\URLReputationList\DefDownloads\URLREP
luxds.dat location on Linux Platform:
"<PRODUCT-INSTALL-DIR>/definitions/AntiVirus/"
"<PRODUCT-INSTALL-DIR>/definitions/reputation/dwnlds/revoc/"
"<PRODUCT-INSTALL-DIR>/definitions/reputation/dwnlds/symvt/"
"<PRODUCT-INSTALL-DIR>/definitions/reputation/dwnlds/tiset/"
"<PRODUCT-INSTALL-DIR>/definitions/"
"<PRODUCT-INSTALL-DIR>/definitions/URLListLookup/DefDownloads/CAIC"
"<PRODUCT-INSTALL-DIR>/definitions/URLListLookup/DefDownloads/SYM"
"<PRODUCT-INSTALL-DIR>/definitions/URLRepLookup/URLReputationList/DefDownloads/URLREP"
Rapid release: