diff --git a/docs/commands/distributed-engines/Register-TssDistributedEngine.md b/docs/commands/distributed-engines/Register-TssDistributedEngine.md
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+++ b/docs/commands/distributed-engines/Register-TssDistributedEngine.md
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+# Register-TssDistributedEngine
+
+## SYNOPSIS
+Activate a Distributed Engine for a Site
+
+## SYNTAX
+
+```
+Register-TssDistributedEngine [-TssSession] <Session> -Id <Int32[]> -SiteId <Int32> [-WhatIf] [-Confirm]
+ [<CommonParameters>]
+```
+
+## DESCRIPTION
+Activate a Distributed Engine for a Site
+
+## EXAMPLES
+
+### EXAMPLE 1
+```
+$session = New-TssSession -SecretServer https://alpha -Credential $ssCred
+Register-TssDistributedEngine -TssSession $session -EngineId 6 -SiteId 5
+```
+
+Activate Engine ID 6 on Site ID 5
+
+## PARAMETERS
+
+### -TssSession
+TssSession object created by New-TssSession for authentication
+
+```yaml
+Type: Session
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: 1
+Default value: None
+Accept pipeline input: True (ByValue)
+Accept wildcard characters: False
+```
+
+### -Id
+Engine ID
+
+```yaml
+Type: Int32[]
+Parameter Sets: (All)
+Aliases: EngineId
+
+Required: True
+Position: Named
+Default value: None
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -SiteId
+Site ID
+
+```yaml
+Type: Int32
+Parameter Sets: (All)
+Aliases:
+
+Required: True
+Position: Named
+Default value: 0
+Accept pipeline input: True (ByPropertyName)
+Accept wildcard characters: False
+```
+
+### -WhatIf
+Shows what would happen if the cmdlet runs.
+The cmdlet is not run.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: wi
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### -Confirm
+Prompts you for confirmation before running the cmdlet.
+
+```yaml
+Type: SwitchParameter
+Parameter Sets: (All)
+Aliases: cf
+
+Required: False
+Position: Named
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
+### CommonParameters
+This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).
+
+## INPUTS
+
+## OUTPUTS
+
+### Thycotic.PowerShell.DistributedEngines.EngineActivation
+## NOTES
+Requires TssSession object returned by New-TssSession
+
+## RELATED LINKS
+
+[https://thycotic-ps.github.io/thycotic.secretserver/commands/distributed-engines/Register-TssDistributedEngine](https://thycotic-ps.github.io/thycotic.secretserver/commands/distributed-engines/Register-TssDistributedEngine)
+
+[https://github.com/thycotic-ps/thycotic.secretserver/blob/main/src/functions/distributed-engines/Register-TssDistributedEngine.ps1](https://github.com/thycotic-ps/thycotic.secretserver/blob/main/src/functions/distributed-engines/Register-TssDistributedEngine.ps1)
+
diff --git a/src/Thycotic.SecretServer/classes/distributed-engines/EngineActivation.cs b/src/Thycotic.SecretServer/classes/distributed-engines/EngineActivation.cs
new file mode 100644
index 00000000..be9e1bb6
--- /dev/null
+++ b/src/Thycotic.SecretServer/classes/distributed-engines/EngineActivation.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Threading.Tasks;
+using System.Management.Automation;
+using System.Management.Automation.Runspaces;
+
+namespace Thycotic.PowerShell.DistributedEngines
+{
+    public class EngineActivation
+    {
+        public int EngineId { get; set; }
+        public string EngineName { get; set; }
+        public string Error { get; set; }
+        public bool IsSuccessful { get; set; }
+    }
+}
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diff --git a/src/functions/distributed-engines/Register-TssDistributedEngine.ps1 b/src/functions/distributed-engines/Register-TssDistributedEngine.ps1
new file mode 100644
index 00000000..4402412d
--- /dev/null
+++ b/src/functions/distributed-engines/Register-TssDistributedEngine.ps1
@@ -0,0 +1,94 @@
+function Register-TssDistributedEngine {
+    <#
+    .SYNOPSIS
+    Activate a Distributed Engine for a Site
+
+    .DESCRIPTION
+    Activate a Distributed Engine for a Site
+
+    .EXAMPLE
+    $session = New-TssSession -SecretServer https://alpha -Credential $ssCred
+    Register-TssDistributedEngine -TssSession $session -EngineId 6 -SiteId 5
+
+    Activate Engine ID 6 on Site ID 5
+
+    .LINK
+    https://thycotic-ps.github.io/thycotic.secretserver/commands/distributed-engines/Register-TssDistributedEngine
+
+    .LINK
+    https://github.com/thycotic-ps/thycotic.secretserver/blob/main/src/functions/distributed-engines/Register-TssDistributedEngine.ps1
+
+    .NOTES
+    Requires TssSession object returned by New-TssSession
+    #>
+    [CmdletBinding(SupportsShouldProcess)]
+    [OutputType('Thycotic.PowerShell.DistributedEngines.EngineActivation')]
+    param (
+        # TssSession object created by New-TssSession for authentication
+        [Parameter(Mandatory, ValueFromPipeline, Position = 0)]
+        [Thycotic.PowerShell.Authentication.Session]
+        $TssSession,
+
+        # Engine ID
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
+        [Alias('EngineId')]
+        [int[]]
+        $Id,
+
+        # Site ID
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
+        [int]
+        $SiteId
+    )
+    begin {
+        $tssParams = $PSBoundParameters
+        $invokeParams = . $GetInvokeApiParams $TssSession
+    }
+    process {
+        Get-TssInvocation $PSCmdlet.MyInvocation
+        if ($tssParams.ContainsKey('TssSession') -and $TssSession.IsValidSession()) {
+            Compare-TssVersion $TssSession '10.9.000064' $PSCmdlet.MyInvocation
+            $uri = $TssSession.ApiUrl, 'distributed-engine', 'update-engine-status' -join '/'
+            $invokeParams.Uri = $uri
+            $invokeParams.Method = 'POST'
+
+            $registerBody = @{data = @{} }
+            $allEngines = @()
+            foreach ($engine in $Id) {
+                $cEngine = @{}
+                $cEngine.Add('changeType','Activate')
+                $cEngine.Add('engineId',$engine)
+                $cEngine.Add('siteId',$SiteId)
+                $allEngines += $cEngine
+            }
+            $registerBody.data.Add('engines',$allEngines)
+
+            $invokeParams.Body = $registerBody | ConvertTo-Json -Depth 100
+            if ($PSCmdlet.ShouldProcess("description: $", "$($invokeParams.Method) $uri with: `n$($invokeParams.Body)")) {
+                Write-Verbose "$($invokeParams.Method) $uri with: `n$($invokeParams.Body)"
+                try {
+                    $apiResponse = Invoke-TssApi @invokeParams
+                    $restResponse = . $ProcessResponse $apiResponse
+                } catch {
+                    Write-Warning 'Issue warning message'
+                    $err = $_
+                    . $ErrorHandling $err
+                }
+
+                if ($restResponse.results) {
+                    foreach ($record in $restResponse.results) {
+                        [Thycotic.PowerShell.DistributedEngines.EngineActivation]@{
+                            EngineId     = $record.engineId
+                            EngineName   = $record.engineName
+                            Error        = $record.error
+                            IsSuccessful = $record.success
+                        }
+                    }
+
+                }
+            }
+        } else {
+            Write-Warning 'No valid session found'
+        }
+    }
+}
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diff --git a/tests/distributed-engines/Register-TssDistributedEngine.Tests.ps1 b/tests/distributed-engines/Register-TssDistributedEngine.Tests.ps1
new file mode 100644
index 00000000..157243c5
--- /dev/null
+++ b/tests/distributed-engines/Register-TssDistributedEngine.Tests.ps1
@@ -0,0 +1,24 @@
+BeforeDiscovery {
+    $commandName = Split-Path ($PSCommandPath.Replace('.Tests.ps1','')) -Leaf
+}
+Describe "$commandName verify parameters" {
+    BeforeDiscovery {
+        [object[]]$knownParameters = 'TssSession', 'Id', 'SiteId'
+        [object[]]$currentParams = ([Management.Automation.CommandMetaData]$ExecutionContext.SessionState.InvokeCommand.GetCommand($commandName,'Function')).Parameters.Keys
+        [object[]]$commandDetails = [System.Management.Automation.CommandInfo]$ExecutionContext.SessionState.InvokeCommand.GetCommand($commandName,'Function')
+        $unknownParameters = Compare-Object -ReferenceObject $knownParameters -DifferenceObject $currentParams -PassThru
+    }
+    Context "Verify parameters" -Foreach @{currentParams = $currentParams } {
+        It "$commandName should contain <_> parameter" -TestCases $knownParameters {
+            $_ -in $currentParams | Should -Be $true
+        }
+        It "$commandName should not contain parameter: <_>" -TestCases $unknownParameters {
+            $_ | Should -BeNullOrEmpty
+        }
+    }
+    Context "Command specific details" {
+        It "$commandName should set OutputType to Thycotic.PowerShell.DistributedEngines.EngineActivation" -TestCases $commandDetails {
+            $_.OutputType.Name | Should -Be 'Thycotic.PowerShell.DistributedEngines.EngineActivation'
+        }
+    }
+}
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