We recommend that you run the following script instead of directly modifying existing files.
Note Some third-party workflow engines may require adding extra types. If this is the case, contact your supplier for information about the required types, and then adjust the script accordingly.
The following script changes Web.config for all web applications to add the necessary entries. This script adds these types for existing web applications and for applications that are created after the script runs. The script should be run only one time on any web front-end server in the farm (it will update all servers).
<#
This script adds the entries to all web.config files for all web applications in the farm.
Run this script as Farm Administrator in one of the WFEs.
This script has to run only one time.
SUMMARY:
This script uses the native SharePoint SPWebConfigModification API to deploy new updates to the web.config file for each web application on each server in the farm. Servers that are added at a later date will also get the updates applied because the API configuration is persisted in the config database. This API does not update the web.config for the central administration web application.
If you are running workflows on the central admin web application, you will have to manually update the web.config by using the steps in the referenced blog.
==============================================================
#>
Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue | Out-Null
function Add-CodeDomAuthorizedType
{
<#
.Synopsis
Adds the necessary authorizedType elements to all web.config files for all non-central admin web applications
.DESCRIPTION
Adds the necessary authorizedType elements to all web.config files for all non-central admin web applications
.EXAMPLE
Add-CodeDomAuthorizedType
#>
[CmdletBinding()]
param
(
)
begin
{
$farmMajorVersion = (Get-SPFarm -Verbose:$false ).BuildVersion.Major
$contentService = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
$typeNames = @( "CodeBinaryOperatorExpression", "CodePrimitiveExpression", "CodeMethodInvokeExpression", "CodeMethodReferenceExpression", "CodeFieldReferenceExpression","CodeThisReferenceExpression", "CodePropertyReferenceExpression")
}
process
{
if( @($contentService.WebConfigModifications | ? { $_.Name -eq "NetFrameworkAuthorizedTypeUpdate" }).Count -gt 0 )
{
Write-Warning "Existing NetFrameworkAuthorizedTypeUpdate entries found, this script has to be run only one time per farm."
return
}
if( $farmMajorVersion -le 14 ) # 2010, 2007
{
foreach( $typeName in $typeNames )
{
# System, Version=2.0.0.0
$netFrameworkConfig = New-Object Microsoft.SharePoint.Administration.SPWebConfigModification
$netFrameworkConfig.Path = "configuration/System.Workflow.ComponentModel.WorkflowCompiler/authorizedTypes"
$netFrameworkConfig.Name = "authorizedType[@Assembly='System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'][@Namespace='System.CodeDom'][@TypeName='{0}'][@Authorized='True']" -f $typeName
$netFrameworkConfig.Owner = "NetFrameworkAuthorizedTypeUpdate"
$netFrameworkConfig.Sequence = 0
$netFrameworkConfig.Type = [Microsoft.SharePoint.Administration.SPWebConfigModification+SPWebConfigModificationType]::EnsureChildNode
$netFrameworkConfig.Value = '<authorizedType Assembly="System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" Namespace="System.CodeDom" TypeName="{0}" Authorized="True"/>' -f $typeName
$contentService.WebConfigModifications.Add($netFrameworkConfig);
}
}
else # 2013+
{
foreach( $typeName in $typeNames )
{
# System, Version=4.0.0.0
$netFrameworkConfig = New-Object Microsoft.SharePoint.Administration.SPWebConfigModification
$netFrameworkConfig.Path = "configuration/System.Workflow.ComponentModel.WorkflowCompiler/authorizedTypes/targetFx"
$netFrameworkConfig.Name = "authorizedType[@Assembly='System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'][@Namespace='System.CodeDom'][@TypeName='{0}'][@Authorized='True']" -f $typeName
$netFrameworkConfig.Owner = "NetFrameworkAuthorizedTypeUpdate"
$netFrameworkConfig.Sequence = 0
$netFrameworkConfig.Type = [Microsoft.SharePoint.Administration.SPWebConfigModification+SPWebConfigModificationType]::EnsureChildNode
$netFrameworkConfig.Value = '<authorizedType Assembly="System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" Namespace="System.CodeDom" TypeName="{0}" Authorized="True"/>' -f $typeName
$contentService.WebConfigModifications.Add($netFrameworkConfig);
}
}
Write-Verbose "Updating web.configs"
$contentService.Update()
$contentService.ApplyWebConfigModifications();
}
end
{
}
}
function Remove-CodeDomAuthorizedType
{
<#
.Synopsis
Removes any web configuration entries owned by "NetFrameworkAuthorizedTypeUpdate"
.DESCRIPTION
Removes any web configuration entries owned by "NetFrameworkAuthorizedTypeUpdate"
.EXAMPLE
Remove-CodeDomAuthorizedType
#>
[CmdletBinding()]
param()
begin
{
$contentService = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
}
process
{
$webConfigModifications = @($contentService.WebConfigModifications | ? { $_.Owner -eq "NetFrameworkAuthorizedTypeUpdate" })
foreach ( $webConfigModification in $webConfigModifications )
{
Write-Verbose "Found instance owned by NetFrameworkAuthorizedTypeUpdate"
$contentService.WebConfigModifications.Remove( $webConfigModification ) | Out-Null
}
if( $webConfigModifications.Count -gt 0 )
{
$contentService.Update()
$contentService.ApplyWebConfigModifications()
}
}
end
{
}
}
# The following command will get the timerjob responsible for the web.config change deployment
# Get-SPTimerJob | ? { $_.Name -eq "job-webconfig-modification" }
# The following command will make the appropriate changes
Add-CodeDomAuthorizedType
# Remove the following command if you have to remove the web.config updates, you can use this function to retract the changes
# Remove-CodeDomAuthorizedType