Hello. Since today I'm having this problem. I have 3 ESXi servers version 6.7.0, build 7872652 and ESXi build 8169922.
Today, I can only login with the browser in one of them. The passwords are ok, the proof of that is I can login locally. Yesterday I added one account (read only) for zabbix monitoring, but on the other server that i can't login also, The account was created last week and I've been able to login (browser) without any issues.
I can login in both of them with the recently created "zabbix" read only account.
When I logged in locally a while ago, I've enabled SSH. Then I could briefly log in with the browser. After disable SSH, no more web browser access.
Any ideas please?