Control how Office handles form-based sign-in prompts
Verified with Microsoft 365/Office 5568.1000 — updated on September 4, 2026
Supported on: At least Windows Server 2008 R2 or Windows 7
Path in the GPO console
User Configuration\Administrative Templates\Microsoft Office 2016\Security Settings Description
This policy setting controls how Office applications handle form-based sign-in prompts. If you enable this policy setting, you must choose one of the following options: Block all prompts Ask the user what to do for each new host Show prompts only from allowed hosts If you select “Block all prompts” then no form-based sign-in prompts are shown to the user and the user is shown a message that the sign-in method isn’t allowed. If you select “Ask the user what do for each new host” then the user is asked for each new host whether the user wants to sign-in to the host. If the user has previously signed-in to a host, a form-based sign-in prompt is shown for that host. Also, form-based sign-in prompts are shown for any hosts specified by the “Specify hosts allowed to show form-based sign-in prompts to users” setting. If you select “Show prompts only from allowed hosts” then form-based sign-in prompts are shown only from hosts that have been specified by the additional “Specify hosts allowed to show form-based sign-in prompts to users” setting. Form-based sign-in prompts from all other hosts are blocked and the user is shown a message that the sign-in method isn’t allowed. Note: If you don’t configure the “Specify hosts allowed to show form-based sign-in prompts to users” setting or don’t specify any hosts in that setting, then the behavior of the “Show prompts only from allowed hosts” option will be the same as if you selected the “Block all prompts” option. If you disable or don’t configure this policy setting, all form-based sign-in prompts are blocked and the user is shown a message that the sign-in method isn’t allowed. But users are able to change the behavior for form-based sign-in prompts by going to File > Options > Trust Center > Trust Center Settings > Form-based sign-in. Note: This policy setting only applies to subscription versions of Office, such as Microsoft 365 Apps for enterprise, and to subscription versions of Project and Visio.
Registry
software\policies\microsoft\office\16.0\common Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Control how Office handles form-based sign-in prompts
; State: Enabled
; Supported on: At least Windows Server 2008 R2 or Windows 7
[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\common]
"fbabehavior"=dword:00000001
"fbaenabledhosts"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\common'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'fbabehavior' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'fbaenabledhosts' -Value '' -Type StringIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\common' -Name 'fbabehavior' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\common' -Name 'fbaenabledhosts' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\common'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'fbabehavior' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'fbaenabledhosts' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\common' -Name 'fbabehavior' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\common' -Name 'fbaenabledhosts' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Control how Office handles form-based sign-in prompts
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\common'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'fbabehavior' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'fbaenabledhosts' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.