While upgrading several environments these are some of the lessons learned.
- Disable any Agent Upgrade policies you have created
Ensure your servers are fully patched
Clear the IE cache
@echo off
ECHO clearing browser cache
RunDll32.exe InetCpl.cpl,ClearMyTracksByProcess 8
IF NOT "%ErrorLevel%" EQU "0" (ECHO failed to clear cache)
- Ensure IE 11 is fully patched and hotfix is applied https://support.symantec.com/en_US/article.TECH233595.html
- Reboot the SQL and SMP after upgrade
- Ensure you don’t have any partial installs in the SIM (Ctrl+shift+P)
- Allow server to process NSE’s
- From the top of the tree for agent upgrades use scheduled window and use incremental times for each
- Turn on the site server upgrade
- Run package update and distribution
- Update delta membership and policy
- Once the site servers are fully upgraded with agent and subagents enable non-site server agent upgrade.