esxi host access with vsphere client

[Tewffik]

Hi, 

ESXI 6.0.0
I have a problem accessing the esxi host with the vsphere client, it shows me the following message: <Call "ServiceInstance.RetrieveContent" for object "ServiceInstance" on Server "xx.xx.xx.xx" failed.> I can ping it. knowing that I just stopped this host to replace a RAM. Once started, I was able to access to check my VMS, but then the next day, suddenly, it is impossible for
me to access it!
How can i resolve this please.
Thanks 

[scott28tt]

Thread reported, it seems like it should belong in a general vSphere area since you only mention the client and no SDK (where you posted the thread)

[Tewffik]

sorry I'm new to vmware and didn't know where to post it

[e_espinel]

Hello.
Please indicate which exact build you are using.
Log into the ESXi host from an SSH (Putty) connection and run the command vmware -v or vmware -vl.

Verify the connection between you (PC) and the ESXi Host, changes in the firewall or Ethernet Switch.
Try to connect to the ESXi host (ip address) using a browser https://ip address

[mbufkin]

Have you tried to restart the host just to make sure the new RAM is not causing the issue?

[IRIX201110141]

Looks for me like ESXi isnt running well. You can try to restart the management services or hostd.

For shutting down your VMs you dont need a GUI... connect to ssh or work directly on the shell.

vim-cmd vmsvc/getallvms

and

vim-cmd vmsvc/power.shutdown <VID>

to shutdown a VM or for a power off

vim-cmd vmsvc/power.off <VID>

The <vid> is listet in the first column.

Regards
Joerg

[Tewffik]

Hi,

Thanks to all

 IRIX201110141 ,mbufkin and e_espinel

really, ESXi isnt running well.

I plugged a monitor and keyboard into the esxi to get access to the console, but it was stuck
I was able to turn off in rdp some vms that were operational, unlike others
then I turned off the esxi by the power button

After I removed all the rams and I reinstalled them according to the dell poweredge r730 diagram
I booted the esxi and it detected all the rams, then continued to boot normally without error
I started all the vms without problems

Still wondering why this problem happened? knowing I installed the new ram in its exact location A5
if another RAM fails, should all the rams be disconnected and reconnected?

thank you very much for your contributions