Did some testing with 8.4 in our non-production environment without any issues/problems.
After performing the 8.4 Upgrade on the one production server from 8.3 P5, I found that our Web-Tiers are no longer able to communicate.
The one web-tier version is 126.96.36.199. I can access the Web-Tier Page, I enter the user-name and click OK.
The next page is an Error Page with the following - "Sorry, your request cannot be processed at this time."
If I hit the Self-Service Page right on the RSA Application, no issues.
Any ideas/thoughts on where I can look to see what is causing the issue?