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JasonT777
Occasional Reader
Oct 07, 2025

Forcing Outlook Fonts via Intune

A client has requested we force a specific font for Outlook on all their devices and I've been investigating a method of pushing this out via Intune. This post on https://www.linkedin.com/pulse/manage-font-intune-outlook-rapha%C3%ABl-zimmermann includes some PowerShell scripts to determine the correct fonts and then apply them, but I'm getting an error when I try to use them. The first script appears to run without incident and provides the font values.

$Path = "registry::HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\mailsettings"
$Name1 = "ReplyFontComplex"
$Name2 = "ComposeFontComplex"
$Name3 = "ReplyFontSimple"
$Name4 = "ComposeFontSimple"
$Name5 = "TextFontComplex"
$Name6 = "TextFontSimple"

(Get-ItemProperty -Path $Path -Name $Name1 -ErrorAction Stop | Select-Object -ExpandProperty $Name1 | ForEach-Object { '{0:X2}' -f $_ }) -join ','
(Get-ItemProperty -Path $Path -Name $Name2 -ErrorAction Stop | Select-Object -ExpandProperty $Name2 | ForEach-Object { '{0:X2}' -f $_ }) -join ','
(Get-ItemProperty -Path $Path -Name $Name3 -ErrorAction Stop | Select-Object -ExpandProperty $Name3 | ForEach-Object { '{0:X2}' -f $_ }) -join ','
(Get-ItemProperty -Path $Path -Name $Name4 -ErrorAction Stop | Select-Object -ExpandProperty $Name4 | ForEach-Object { '{0:X2}' -f $_ }) -join ','
(Get-ItemProperty -Path $Path -Name $Name5 -ErrorAction Stop | Select-Object -ExpandProperty $Name5 | ForEach-Object { '{0:X2}' -f $_ }) -join ','
(Get-ItemProperty -Path $Path -Name $Name6 -ErrorAction Stop | Select-Object -ExpandProperty $Name6 | ForEach-Object { '{0:X2}' -f $_ }) -join ','

 

However when the results are run through the below remediation script I get this error:

Cannot convert value "0x
73" to type "System.Byte". Error: "Could not find any recognizable digits."
At line:57 char:1
+ Set-ItemProperty -Path $registryPath -Name $Name1Complex -Value ([byt ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvalidCastFromStringToInteger

 

$ValueSimple = "3C,00,00,00,1F,00,00,F8,00,00,00,40,DC,00,00,00,00,00,00,00,00,00,00,00,00,22,43,61,6C,69,62,72,69,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00"
$ValueComposeComplex = "3C,68,74,6D,6C,3E,0D,0A,0D,0A,3C,68,65,61,64,3E,0D,0A,3C,73,74,79,6C,65,3E,0D,0A,0D,0A,20,2F,2A,20,53,74,79,6C,65,20,44,65,66,69,6E,69,74,69,6F,6E,73,20,2A,2F,0D,0A,20,73,70,61,6E,2E,50,65,72,73,6F,6E,61,6C,43,6F,6D,70,6F,73,65,53,74,79,6C,65,0D,0A,09,7B,6D,
73,6F,2D,73,74,79,6C,65,2D,6E,61,6D,65,3A,22,50,65,72,73,6F,6E,61,6C,20,43,6F,6D,70,6F,73,65,20,53,74,79,6C,65,22,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,74,79,70,65,3A,70,65,72,73,6F,6E,61,6C,2D,63,6F,6D,70,6F,73,65,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,
2D,6E,6F,73,68,6F,77,3A,79,65,73,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,75,6E,68,69,64,65,3A,6E,6F,3B,0D,0A,09,6D,73,6F,2D,61,6E,73,69,2D,66,6F,6E,74,2D,73,69,7A,65,3A,31,31,2E,30,70,74,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,66,6F,6E,74,2D,73,69,7A,65,3A,
31,31,2E,30,70,74,3B,0D,0A,09,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,22,41,70,74,6F,73,22,2C,73,61,6E,73,2D,73,65,72,69,66,3B,0D,0A,09,6D,73,6F,2D,61,73,63,69,69,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,61,73,63,69,69,2D,74,
68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,
2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,68,61,6E,73,69,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,68,61,6E,73,69,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,
66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,22,54,69,6D,65,73,20,4E,65,77,20,52,6F,6D,61,6E,22,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,62,69,64,69,3B,0D,0A,09,63,6F,6C,6F,72,3A,77,69,6E,64,6F,77,74,65,78,74,3B,7D,0D,
0A,2D,2D,3E,0D,0A,3C,2F,73,74,79,6C,65,3E,0D,0A,3C,2F,68,65,61,64,3E,0D,0A,0D,0A,3C,2F,68,74,6D,6C,3E,0D,0A"
$ValueReplyComplex = "3C,68,74,6D,6C,3E,0D,0A,0D,0A,3C,68,65,61,64,3E,0D,0A,3C,73,74,79,6C,65,3E,0D,0A,0D,0A,20,2F,2A,20,53,74,79,6C,65,20,44,65,66,69,6E,69,74,69,6F,6E,73,20,2A,2F,0D,0A,20,73,70,61,6E,2E,50,65,72,73,6F,6E,61,6C,52,65,70,6C,79,53,74,79,6C,65,0D,0A,09,7B,6D,73,6F,
2D,73,74,79,6C,65,2D,6E,61,6D,65,3A,22,50,65,72,73,6F,6E,61,6C,20,52,65,70,6C,79,20,53,74,79,6C,65,22,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,74,79,70,65,3A,70,65,72,73,6F,6E,61,6C,2D,72,65,70,6C,79,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,6E,6F,73,68,6F,
77,3A,79,65,73,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,75,6E,68,69,64,65,3A,6E,6F,3B,0D,0A,09,6D,73,6F,2D,61,6E,73,69,2D,66,6F,6E,74,2D,73,69,7A,65,3A,31,31,2E,30,70,74,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,66,6F,6E,74,2D,73,69,7A,65,3A,31,31,2E,30,70,74,
3B,0D,0A,09,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,22,41,70,74,6F,73,22,2C,73,61,6E,73,2D,73,65,72,69,66,3B,0D,0A,09,6D,73,6F,2D,61,73,63,69,69,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,61,73,63,69,69,2D,74,68,65,6D,65,2D,66,
6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,
3B,0D,0A,09,6D,73,6F,2D,68,61,6E,73,69,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,68,61,6E,73,69,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,66,6F,6E,74,2D,66,
61,6D,69,6C,79,3A,22,54,69,6D,65,73,20,4E,65,77,20,52,6F,6D,61,6E,22,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,62,69,64,69,3B,0D,0A,09,63,6F,6C,6F,72,3A,77,69,6E,64,6F,77,74,65,78,74,3B,7D,0D,0A,2D,2D,3E,0D,0A,
3C,2F,73,74,79,6C,65,3E,0D,0A,3C,2F,68,65,61,64,3E,0D,0A,0D,0A,3C,2F,68,74,6D,6C,3E,0D,0A"
$ValueTextComplex = "3C,68,74,6D,6C,3E,0D,0A,0D,0A,3C,68,65,61,64,3E,0D,0A,3C,73,74,79,6C,65,3E,0D,0A,0D,0A,20,2F,2A,20,53,74,79,6C,65,20,44,65,66,69,6E,69,74,69,6F,6E,73,20,2A,2F,0D,0A,20,70,2E,4D,73,6F,50,6C,61,69,6E,54,65,78,74,2C,20,6C,69,2E,4D,73,6F,50,6C,61,69,6E,54,65,78,
74,2C,20,64,69,76,2E,4D,73,6F,50,6C,61,69,6E,54,65,78,74,0D,0A,09,7B,6D,73,6F,2D,73,74,79,6C,65,2D,6E,6F,73,68,6F,77,3A,79,65,73,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,70,72,69,6F,72,69,74,79,3A,39,39,3B,0D,0A,09,6D,73,6F,2D,73,74,79,6C,65,2D,6C,69,6E,6B,
3A,22,50,6C,61,69,6E,20,54,65,78,74,20,43,68,61,72,22,3B,0D,0A,09,6D,61,72,67,69,6E,3A,30,63,6D,3B,0D,0A,09,6D,73,6F,2D,70,61,67,69,6E,61,74,69,6F,6E,3A,77,69,64,6F,77,2D,6F,72,70,68,61,6E,3B,0D,0A,09,66,6F,6E,74,2D,73,69,7A,65,3A,31,31,2E,30,70,74,3B,0D,0A,
09,6D,73,6F,2D,62,69,64,69,2D,66,6F,6E,74,2D,73,69,7A,65,3A,31,30,2E,35,70,74,3B,0D,0A,09,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,22,43,61,6C,69,62,72,69,22,2C,73,61,6E,73,2D,73,65,72,69,66,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,66,6F,6E,74,2D,66,61,6D,
69,6C,79,3A,41,70,74,6F,73,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,6C,61,74,69,6E,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,66,6F,6E,74,2D,66,61,6D,69,6C,79,3A,22,54,69,6D,65,73,20,4E,65,77,20,52,6F,6D,
61,6E,22,3B,0D,0A,09,6D,73,6F,2D,62,69,64,69,2D,74,68,65,6D,65,2D,66,6F,6E,74,3A,6D,69,6E,6F,72,2D,62,69,64,69,3B,0D,0A,09,6D,73,6F,2D,66,61,72,65,61,73,74,2D,6C,61,6E,67,75,61,67,65,3A,45,4E,2D,55,53,3B,7D,0D,0A,2D,2D,3E,0D,0A,3C,2F,73,74,79,6C,65,3E,0D,0A,
3C,2F,68,65,61,64,3E,0D,0A,0D,0A,3C,2F,68,74,6D,6C,3E,0D,0A"

$registryPath = 'HKCU:\SOFTWARE\Microsoft\Office\16.0\Common\mailsettings'
$Name1Simple = "ComposeFontSimple"
$Name1Complex = "ComposeFontComplex"
$Name2Simple = "ReplyFontSimple"
$Name2Complex = "ReplyFontComplex"
$Name3Simple = "TextFontSimple"
$Name3Complex = "TextFontComplex"

$hexSimple = $ValueSimple.Split(',') | % { "0x$_"}
$hexComposeComplex = $ValueComposeComplex.Split(',') | % { "0x$_"}
$hexReplyComplex = $ValueReplyComplex.Split(',') | % { "0x$_"}
$hexTextComplex = $ValueTextComplex.Split(',') | % { "0x$_"}

IF(!(Test-Path $registryPath))
{
New-Item -Path $registryPath -Force | Out-Null
New-ItemProperty -Path $registryPath -name NewTheme -PropertyType string
New-ItemProperty -Path $registryPath -Name $Name1Simple -Value ([byte[]]$hexSimple) -PropertyType Binary -Force
New-ItemProperty -Path $registryPath -Name $Name2Simple -Value ([byte[]]$hexSimple) -PropertyType Binary -Force
New-ItemProperty -Path $registryPath -Name $Name3Simple -Value ([byte[]]$hexSimple) -PropertyType Binary -Force
New-ItemProperty -Path $registryPath -Name $Name1Complex -Value ([byte[]]$hexComposeComplex) -PropertyType Binary -Force
New-ItemProperty -Path $registryPath -Name $Name2Complex -Value ([byte[]]$hexReplyComplex) -PropertyType Binary -Force
New-ItemProperty -Path $registryPath -Name $Name3Complex -Value ([byte[]]$hexTextComplex) -PropertyType Binary -Force
}

ELSE {
Set-ItemProperty -Path $registryPath -name NewTheme -value $null
Set-ItemProperty -Path $registryPath -name ThemeFont -value 2
Set-ItemProperty -Path $registryPath -Name $Name1Simple -Value ([byte[]]$hexSimple) -Force
Set-ItemProperty -Path $registryPath -Name $Name2Simple -Value ([byte[]]$hexSimple) -Force
Set-ItemProperty -Path $registryPath -Name $Name3Simple -Value ([byte[]]$hexSimple) -Force
Set-ItemProperty -Path $registryPath -Name $Name1Complex -Value ([byte[]]$hexComposeComplex) -Force
Set-ItemProperty -Path $registryPath -Name $Name2Complex -Value ([byte[]]$hexReplyComplex) -Force
Set-ItemProperty -Path $registryPath -Name $Name3Complex -Value ([byte[]]$hexTextComplex) -Force
}

 

I don't know PowerShell well enough to determine what's wrong, but I think the first script isn't providing the values in the right format. While troubleshooting I fed it into Copilot which I think mentioned that some of the output was a string instead of binary. Anyone know what I need to change to get this working?

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