Since Zabbix 3.4.13 I believe, I have the problem that one single vCenter, won't tell me its Moreversion number. I monitor about 10 vCenter, at 10 customer,s with 10 different proxys. All of them are Debian 9 on Zabbix 4.0+. One of them tells me for vmware.fullname[\{$URL}] & vmware.version[\{$URL}]: Simple check is not supported.

I tried a lot: Different updates to vCenter. Recreating the Read-Only user. Rebooting and patching the Zabbix Proxy. Recreating the Host in Zabbix Frontend. Reading the Zabbix Proxy Log. Raising the debug level for "vmware collector" and pressing "check now" heavily, which generates no information at all in the logs. I am completely blind to this error, Zabbix gives me no Feedback. **

Can anyone help me to troubleshoot this?

Steps to reproduce:

1. Zabbix Proxy 4.0.5
2. VMware vCenter 6.7.0
3. Create vCenter as Host in Zabbix Frontend
4. Link with "Template Virt VMware"
5. Set three Macros: {$URL} / {$USERNAME} / {$PASSWORD}
6. Wait a minute or two

Result:
See screenshot...

(The 3m Interval was from testing, it's normally 1h)

Expected: