AEM 6.2 SP1 CFP 20 is the last release of AEM 6.2There is nothing newer to apply. If anything look at the Oak Cumulative Fix Packs  https://helpx.adobe.com/ca/experience-manager/kb/aem62-available-hotfixes/OakCumulativeFixPack.html#AvailableOakCumulativeFixPacks NOTE -- AEM 6.2 is end of core suppor...

you are truncating too much of the log to convey anything useful.

The most important thing to understand migrating from 6.2 to (6.3,6.4 or 6.5) is that there is a mandatory repository migration step that must be completed before the upgrade. EG : Step 4 in this link : https://helpx.adobe.com/ca/experience-manager/6-3/sites/deploying/using/upgrade.html For 6.2 to 6...

How could you download something that wasn't first uploaded? There's no download size limitations. If AEM ingests it, you can download that binary.   

If it's JDK 11 you are likely hitting this : https://jira.apache.org/jira/browse/FELIX-6184

JDK8 or JDK11? 

Likely an error by either the YUI or GCC processors to minify your css. 

@Jaideep_Brar All that changed in that backport request was that instead of dumping the entire stack-trace, we're just logging the first line of the WARN. So they will still see : com.adobe.granite.security.user.util.AuthorizableUtil Unable to get display name for srikanth.pokkunuri in the logs.

Friendly reminder that the upcoming 6.3.3.8 service pack in March will be the last set of fixes that make their way into AEM 6.3.https://helpx.adobe.com/experience-manager/maintenance-releases-roadmap.html And AEM 6.3 will be end-of-core-support at the end of April this yearhttps://helpx.adobe.com/c...

This is correct. The Content Disposition Filter causes the asset to download as a security measure. You could technically embed a malicious script inside say an SVG asset which if rendered within the browser could execute code unknowingly.