FSLogix › ODFC Containers

Reattach Count

ComputerIntune-readyOdfcReattachCount

Supported on v2105 or later

26.08

What it does

When a VHD(x) volume is detached unexpectedly, the FSLogix system will attempt to re-attach the volume. This value specifies how many times to retry. The default value is 60 retries which is the same as "Not Configured". Registry Entry: HKLM\SOFTWARE\Policies\FSLogix\ODFC\ReAttachRetryCount Type: DWORD Values: Min = 0, Max = 600

What it writes

Hive: HKEY_LOCAL_MACHINE
Registry key: Software\Policies\FSLogix\ODFC

Options

Option	Type	Registry value	Allowed values
Reattach CountRequiredDefault: 60	Number	`ReAttachRetryCount`	0 to 600

Configure and deploy

Choose a state and the option values; the output below is generated from the template for exactly that.

Enabled · Computer · template defaults

Registry file (.reg)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\FSLogix\ODFC]
"ReAttachRetryCount"=dword:0000003C

PowerShell

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Reattach Count
# Name: OdfcReattachCount
# Scope: Machine
# State: Enabled
# Source: fslogix.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\FSLogix\ODFC' -Name 'ReAttachRetryCount' -PropertyType 'DWord' -Value 60

The OMA-URI is an inferred ADMX-backed Policy CSP candidate derived from the source ADMX file name and policy name.
Some Microsoft policies use built-in Policy CSP pages whose area names don't match the ADMX file name, so verify the candidate against Microsoft Learn before deployment.

ADMX profile candidate (OMA-URI)

./Device/Vendor/MSFT/Policy/Config/ADMX_fslogix/OdfcReattachCount

ADMX SyncML candidate

<SyncML xmlns="SYNCML:SYNCML1.2">
  <SyncBody>
    <Replace>
      <CmdID>1</CmdID>
      <Item>
        <Meta>
          <Format>chr</Format>
          <Type>text/plain</Type>
        </Meta>
        <Target>
          <LocURI>./Device/Vendor/MSFT/Policy/Config/ADMX_fslogix/OdfcReattachCount</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;
&lt;data id="OdfcReattachCount" value="60"/&gt;</Data>
      </Item>
    </Replace>
    <Final/>
  </SyncBody>
</SyncML>

Intune remediation scripts

Detection

$ErrorActionPreference = 'Stop'
$reasons = [System.Collections.Generic.List[string]]::new()

function Test-RegistryValueExists {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    return $null -ne (Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue)
}

function Test-RegistryValueEquals {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $Kind,
        [Parameter(Mandatory = $true)][object] $Expected
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    $valueObject = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue
    if ($null -eq $valueObject) {
        return $false
    }

    $actual = $valueObject.$Name
    switch ($Kind) {
        'String' { return [string]$actual -ceq [string]$Expected }
        'ExpandString' { return [string]$actual -ceq [string]$Expected }
        'DWord' { return [uint32]$actual -eq [uint32]$Expected }
        'QWord' { return [uint64]$actual -eq [uint64]$Expected }
        'MultiString' {
            $actualArray = @($actual)
            $expectedArray = @($Expected)
            if ($actualArray.Count -ne $expectedArray.Count) { return $false }
            for ($index = 0; $index -lt $actualArray.Count; $index++) {
                if ([string]$actualArray[$index] -cne [string]$expectedArray[$index]) { return $false }
            }
            return $true
        }
        'Binary' {
            $actualArray = [byte[]]$actual
            $expectedArray = [byte[]]$Expected
            if ($actualArray.Length -ne $expectedArray.Length) { return $false }
            for ($index = 0; $index -lt $actualArray.Length; $index++) {
                if ($actualArray[$index] -ne $expectedArray[$index]) { return $false }
            }
            return $true
        }
        default { return [string]$actual -ceq [string]$Expected }
    }
}

# Policy: Reattach Count
# Name: OdfcReattachCount
# Scope: Machine
# State: Enabled
# Source: fslogix.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\FSLogix\ODFC' -Name 'ReAttachRetryCount' -Kind 'DWord' -Expected 60
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\FSLogix\ODFC\ReAttachRetryCount') | Out-Null
}

if ($reasons.Count -eq 0) {
    Write-Output 'Compliant'
    exit 0
}

$reasons | ForEach-Object { Write-Output $_ }
exit 1

Remediation

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Reattach Count
# Name: OdfcReattachCount
# Scope: Machine
# State: Enabled
# Source: fslogix.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\FSLogix\ODFC' -Name 'ReAttachRetryCount' -PropertyType 'DWord' -Value 60

History 1 retained release

26.0827 Aug 2026
- Already present in the first release ChangeIntel keeps.

Template

Internal name: OdfcReattachCount
Namespace: FSLogix.Policies
Template file: fslogix.admx
Release: Microsoft FSLogix 26.08 · file set d042c1d887a47461…

Definition, editor controls and support

Definition

<policy class="Machine" displayName="$(string.OdfcReattachCount_Display)" explainText="$(string.OdfcReattachCount_Explain)" key="Software\Policies\FSLogix\ODFC" name="OdfcReattachCount" presentation="$(presentation.OdfcReattachCount)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="FSLogix.Policies:ODFC" />
      <supportedOn ref="FSLogix.Policies:v2105" />
      <elements>
        <decimal id="OdfcReattachCount" key="Software\Policies\FSLogix\ODFC" maxValue="600" required="true" valueName="ReAttachRetryCount" />
      </elements>
    </policy>

Editor controls

<presentation id="OdfcReattachCount" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <decimalTextBox defaultValue="60" refId="OdfcReattachCount">Reattach Count</decimalTextBox>
      </presentation>

Supported platforms and category

FSLogix.Policies:category:FSLogix
<category displayName="$(string.FSLogix_Category)" name="FSLogix" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
FSLogix.Policies:category:ODFC
<category displayName="$(string.ODFC_Category)" name="ODFC" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="FSLogix.Policies:FSLogix" />
    </category>
FSLogix.Policies:definition:v2105
<definition displayName="$(string.v2105_Definition)" name="v2105" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
FSLogix.Policies:category:FSLogix
<category displayName="$(string.FSLogix_Category)" name="FSLogix" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="FSLogix.Policies:FSLogix_Category">FSLogix</string></strings>
FSLogix.Policies:category:ODFC
<category displayName="$(string.ODFC_Category)" name="ODFC" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="FSLogix.Policies:FSLogix" />
    </category>
<strings><string id="FSLogix.Policies:ODFC_Category">ODFC Containers</string></strings>
FSLogix.Policies:definition:v2105
<definition displayName="$(string.v2105_Definition)" name="v2105" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="FSLogix.Policies:v2105_Definition">v2105 or later</string></strings>