Invoke-AzVMRunCommand for powershell removes caret character

[rezarms]

Description

invoke-azcommand removes caret character . I tried to call invoke-azcommand to run a powershell script but my script receives parameter with deleted caret character.

$password="test^123456"

Invoke-AzVMRunCommand -ResourceGroupName $rg -VMName $vm -CommandId 'RunPowerShellScript' -ScriptPath './test.ps1' -Parameter @{"password"=$password}

in my script I print out the value of the parameter which is "test123456"

Issue script & Debug output

HTTP Method:
POST

Absolute Uri:
https://management.azure.com/subscriptions/000000000000000/resourceGroups/rg1/providers/Microsoft.Compute/virtualMachines/vm1/runCommand?api
-version=2020-12-01

Headers:
x-ms-client-request-id        : 00000000000000000000
accept-language               : en-US

Body:
{
  "commandId": "RunPowerShellScript",
  "script": [
    "[cmdletbinding(SupportsShouldProcess=$true)]",
    " param(",
    " [parameter(Mandatory=$true)][String]$password)",
    " write-host \" password is $password\""
  ],
  "parameters": [
    {
      "name": "password",
      "value": "test^123456"
    }
  ]
}


DEBUG: ============================ HTTP RESPONSE ============================

Status Code:
Accepted



Body:
{
  "value": [
    {
      "code": "ComponentStatus/StdOut/succeeded",
      "level": "Info",
      "displayStatus": "Provisioning succeeded",
      "message": " password is test123456"
    },
    {
      "code": "ComponentStatus/StdErr/succeeded",
      "level": "Info",
      "displayStatus": "Provisioning succeeded",
      "message": ""
    }
  ]
}

Environment data

Name                           Value                                                                                                                                                 
----                           -----                                                                                                                                                 
PSVersion                      5.1.19041.1682                                                                                                                                        
PSEdition                      Desktop                                                                                                                                               
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                                                                               
BuildVersion                   10.0.19041.1682                                                                                                                                       
CLRVersion                     4.0.30319.42000                                                                                                                                       
WSManStackVersion              3.0                                                                                                                                                   
PSRemotingProtocolVersion      2.3                                                                                                                                                   
SerializationVersion           1.1.0.1

Module versions

Script     2.3.0      Az.Accounts                        
Script     4.13.0     Az.Compute                                      
Script     3.4.4      Az.KeyVault

Error output

No response

[msftbot[bot]]

Thank you for your feedback. This has been routed to the support team for assistance.

[SaurabhSharma-MSFT]

@rezarms We are looking into it and get back to you for any additional information.

[SaurabhSharma-MSFT]

@rezarms I am able to reproduce this and looks like issue at service end. I am checking internally on this issue and get back to you.

[rezarms]

It seems other special characters would cause different issue. For example < character would fail script call.

[SaurabhSharma-MSFT]

@rezarms This seems to be a limitation on command prompt on VM and the product team is working to provide a fix for the caret character. I will update you as soon as it is available in production. Thanks.

[superfliege]

A similar behavior happens here with the "&" in a paremeter string. This causes that the parameter is empty all at once.

It is really a strange behavior. Is there any feedback on this at some point?

My environment: Windows 11 Script 2.13.1 Az.Accounts
Script 5.7.1 Az.Compute
PSVersion 7.3.8 PSEdition Core