PowerCLI: “WARNING: There were one or more problems with the server certificate”

When you run a PowerCLI script that connects to a vCenter Server, which uses a self-signed SSL certificate:

1:57:08 AM Connecting to VI Server
WARNING: There were one or more problems with the server certificate:
 
* A certification chain processed correctly, but terminated in a root
certificate which isn't trusted by the trust provider.
 
Certificate: [Subject]
  E=support@vmware.com, CN=foo.example.com, OU="VMware, Inc.", O="VMware, Inc."
 
[Issuer]
  E=support@vmware.com, CN=foo.example.com, OU="VMware, Inc.", O="VMware, Inc."
 
[Serial Number]
  C49018FF
 
[Not Before]
  5/18/2012 9:20:09 AM
 
[Not After]
  5/16/2022 9:20:09 AM
 
[Thumbprint]
  AAA9E2D164E7258D0BF2841173AE46034C097FFF
 
The server certificate is not valid.
 
WARNING: THE DEFAULT BEHAVIOR UPON INVALID SERVER CERTIFICATE WILL CHANGE IN A
FUTURE RELEASE. To ensure scripts are not affected by the change, use
Set-PowerCLIConfiguration to set a value for the InvalidCertificateAction
option.
PowerCLI C:\> Get-PowerCLIConfiguration
 
Scope    ProxyPolicy     DefaultVIServerMode InvalidCertificateAction  DisplayDeprecationWarnings WebOperationTimeout
                                                                                                  Seconds
-----    -----------     ------------------- ------------------------  -------------------------- -------------------
Session  UseSystemProxy  Single              Unset                     True                       300
User                     Single
AllUsers

To permanently resolve this, Right-click on PowerCLI > Run as Administrator:

PowerCLI C:\> set-PowerCLIConfiguration -invalidCertificateAction "ignore" -confirm:$false
 
Scope    ProxyPolicy     DefaultVIServerMode InvalidCertificateAction  DisplayDeprecationWarnings WebOperationTimeout
                                                                                                  Seconds
-----    -----------     ------------------- ------------------------  -------------------------- -------------------
Session  UseSystemProxy  Multiple            Ignore                    True                       300
User
AllUsers                                     Ignore

References

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