This can be due to an issue on the Network side
Release : All
Browser: This happens in both IE and Chrome.
Check with your internal network team for any issues that could be blocking the user from viewing the page. Some things to check with your Network team:
When comparing a DB versus Network issue: Typically, a database issue exists if all users are affected, but if only certain users are affected, the network may then be the cause. Users working remotely may have bandwidth issues with the VPN.
If the above doesn't help, see also: