Problem using Google.Ads.GoogleAds library

[johno36]

What is your question?
I am using the Google.Ads.GoogleAds library to version 24.1.0 and getting an error in the System.Memory library when loading the Grpc.Core library:

Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The located assembly's manifest definition
does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileLoadException: Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Source Error:

Line 308:
Line 309: // Get the ConversionUploadService.
Line 310: ConversionUploadServiceClient conversionUploadService =
Line 311: client.GetService(Google.Ads.GoogleAds.Services.V22.ConversionUploadService);
Line 312:

Source File: C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs Line: 310

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' could not be loaded.

=== Pre-bind state information ===
LOG: DisplayName = System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
(Fully-specified)
LOG: Appbase = file:///C:/inetpub/wwwroot/movemanager/
LOG: Initial PrivatePath = C:\inetpub\wwwroot\movemanager\bin
Calling assembly : Grpc.Core, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad.

LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\inetpub\wwwroot\movemanager\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/System.Memory.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/System.Memory/System.Memory.DLL.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/movemanager/bin/System.Memory.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Revision Number
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Stack Trace:
[FileLoadException: Could not load file or assembly 'System.Memory, Version=4.0.1.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
System.Runtime.InteropServices.Marshal.GetDelegateForFunctionPointerInternal(IntPtr ptr, Type t) +0
System.Runtime.InteropServices.Marshal.GetDelegateForFunctionPointer(IntPtr ptr, Type t) +156
Grpc.Core.Internal.UnmanagedLibrary.GetNativeMethodDelegate(String methodName) +66
Grpc.Core.Internal.NativeMethods..ctor(UnmanagedLibrary library) +843
Grpc.Core.Internal.NativeExtension.LoadNativeMethodsUsingExplicitLoad() +309
Grpc.Core.Internal.NativeExtension..ctor() +13
Grpc.Core.Internal.NativeExtension.Get() +145
Grpc.Core.GrpcEnvironment.GrpcNativeInit() +56
Grpc.Core.GrpcEnvironment..ctor() +87
Grpc.Core.GrpcEnvironment.AddRef() +144
Grpc.Core.Channel..ctor(String target, ChannelCredentials credentials, IEnumerable1 options) +199 Google.Ads.Gax.Lib.AdsChannel.CreateGrpcCoreChannel(Uri uri, ChannelCredentials credentials) +409 Google.Ads.Gax.Lib.AdsChannel..ctor(AdsConfig config, String url) +77 Google.Ads.Gax.Lib.CachedChannelFactory.GetChannel(AdsConfig config, String serverUrl) +678 Google.Ads.GoogleAds.Lib.GoogleAdsServiceClientFactory.GetService(ServiceTemplate3 serviceTemplate, GoogleAdsConfig config) +78
Google.Ads.GoogleAds.Lib.GoogleAdsClient.GetService(ServiceTemplate`3 serviceTemplate) +106
movemanager.libraries.UploadEnhancedConversionsForLeads.Run(GoogleAdsClient client, Int64 customerId, Int64 conversionActionId, String conversionDateTime, Double conversionValue, String orderId, String gclid, String Email, String Phone, String FirstName, String LastName, String Zipcode, String ConvActResName, String sessionAttributesEncoded, String sessionAttributes) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:310
movemanager.libraries.UploadEnhancedConversionsForLeads.UploadConversion(String strJobID, String strStatusID) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:262
MyApplication.FurnitureList.btnSave_Click(Object sender, EventArgs e) in C:\inetpub\wwwroot\movemanager\furnitureList\furnitureList.aspx.cs:900
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +139
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +150
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1959

The code I'm using is from the Upload Enhanced Conversions for Leads example in C#:
https://developers.google.com/google-ads/api/samples/upload-enhanced-conversions-for-leads

These are the entries in my Web.config for the assemblyBinding section:

  <dependentAssembly>
    <assemblyIdentity name="System.Diagnostics.DiagnosticSource" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
  </dependentAssembly>
  <dependentAssembly>
    <assemblyIdentity name="Google.Protobuf" publicKeyToken="a7d26565bac4d604" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-3.28.2.0" newVersion="3.28.2.0" />
  </dependentAssembly>
  <dependentAssembly>
    <assemblyIdentity name="Google.Api.Gax.Grpc" publicKeyToken="3ec5ea7f18953e47" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-4.10.0.0" newVersion="4.10.0.0" />
  </dependentAssembly>
  <dependentAssembly>
    <assemblyIdentity name="Google.Api.CommonProtos" publicKeyToken="3ec5ea7f18953e47" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-2.16.0.0" newVersion="2.16.0.0" />
  </dependentAssembly>
  <dependentAssembly>
    <assemblyIdentity name="Google.Api.Gax.Rest" publicKeyToken="3ec5ea7f18953e47" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-4.10.0.0" newVersion="4.10.0.0" />
  </dependentAssembly>
  <dependentAssembly>
    <assemblyIdentity name="Google.LongRunning" publicKeyToken="185c282632e132a0" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-3.5.0.0" newVersion="3.5.0.0" />
  </dependentAssembly>
</assemblyBinding>

See package list for project:

I am trying to resolve this runtime error and any help would be appreciated

Thanks!

John O'Neil
johnoneil966@gmail.com

[Raibaz]

Looking at your looks, it seems like you are depending on an old version of Grpc.Core, 2.0.0.0, which transitively depends on System.Memory 4.0.1.1.

The Google Ads API client library depends on Grpc.Core 2.46.6 through the Google.Ads.Gax dependency, and that Grpc.Core version in turn depends from System.Memory 4.5.5.

I'd recommend making sure you are depending on the latest version of Grpc.Core instead of pinning to an older one.

[johno36]

Thanks for the reply

I removed the Google.Ads and Grpc packages and reinstalled them but am getting an error with Google.Apis.Auth
It's looking for Version 1.68.0 but I have 1.69.0 installed

Application_Error:

• Message: Exception of type 'System.Web.HttpUnhandledException' was thrown.

• Source: System.Web

• InnerException: System.IO.FileLoadException: Could not load file or assembly 'Google.Apis.Auth, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies.
  The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) File name: 'Google.Apis.Auth, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab'

  at Google.Ads.Gax.Lib.AdsChannel.CreateChannel(String url)
  at Google.Ads.Gax.Lib.AdsChannel..ctor(AdsConfig config, String url)
  at Google.Ads.Gax.Lib.CachedChannelFactory.GetChannel(AdsConfig config, String serverUrl)
  at Google.Ads.GoogleAds.Lib.GoogleAdsServiceClientFactory.GetService[TService,TServiceSetting](ServiceTemplate3 serviceTemplate, GoogleAdsConfig config) at Google.Ads.GoogleAds.Lib.GoogleAdsClient.GetService[TService,TServiceSetting](ServiceTemplate3 serviceTemplate)
  at movemanager.libraries.UploadEnhancedConversionsForLeads.Run(GoogleAdsClient client, Int64 customerId, Int64 conversionActionId, String conversionDateTime, Double conversionValue, String orderId, String gclid, String Email, String Phone, String FirstName, String LastName, String Zipcode, String ConvActResName, String sessionAttributesEncoded, String sessionAttributes) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:line 310
  at movemanager.libraries.UploadEnhancedConversionsForLeads.UploadConversion(String strJobID, String strStatusID) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:line 262
  at MyApplication.FurnitureList.btnSave_Click(Object sender, EventArgs e) in C:\inetpub\wwwroot\movemanager\furnitureList\furnitureList.aspx.cs:line 902
  at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
  at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument)
  at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

=== Pre-bind state information ===
LOG: DisplayName = Google.Apis.Auth, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab
(Fully-specified)
LOG: Appbase = file:///C:/inetpub/wwwroot/movemanager/
LOG: Initial PrivatePath = C:\inetpub\wwwroot\movemanager\bin
Calling assembly : Grpc.Auth, Version=2.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad.

LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\inetpub\wwwroot\movemanager\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Google.Apis.Auth, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/Google.Apis.Auth.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/Google.Apis.Auth/Google.Apis.Auth.DLL.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/movemanager/bin/Google.Apis.Auth.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Minor Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Here is the packages.config file after the package updates:

Do I need to update the Google.Apis.Auth package to the latest version?

Thanks again for the help

[Raibaz]

It looks like a similar issue: you seem to be transitively depending on an older version of a Google API that then depends on an older version of Google.Apis.Auth.

Are you using other Google APIs other than the Google Ads API, by any chance?

If so, I'd recommend upgrading them to the respective latest versions too.

You can also use a tool like dotnet depends to understand exactly which ones of your dependencies are introducing other transitive dependencies in your project.

[johno36]

Hello

Thanks for the reply and information

Yes I am also using the Google.Apis.Sheets.V4 package in my web project
I removed all the Google related packages from my project and updated the remaining packages to the latest versions
Then I re-installed the Google.Apis.Sheets.v4 package (1.72.0.3966) and the Google.Ads.GoogleAds package (24.1.0) but
still got the error with Google.Apis.Auth:

Could not load file or assembly 'Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies.
The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Source Error:

Line 308:
Line 309: // Get the ConversionUploadService.
Line 310: ConversionUploadServiceClient conversionUploadService =
Line 311: client.GetService(Google.Ads.GoogleAds.Services.V22.ConversionUploadService);
Line 312:

Source File: C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs Line: 310

Assembly Load Trace: The following information can be helpful to determine why the assembly 'Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' could not be loaded.

=== Pre-bind state information ===
LOG: DisplayName = Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab
(Fully-specified)
LOG: Appbase = file:///C:/inetpub/wwwroot/movemanager/
LOG: Initial PrivatePath = C:\inetpub\wwwroot\movemanager\bin
Calling assembly : Google.Ads.Gax, Version=4.0.6.0, Culture=neutral, PublicKeyToken=52807268f2b614dc.

LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\inetpub\wwwroot\movemanager\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/Google.Apis.Auth.DLL.
LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/movemanager/e9660af9/d3cdf3e9/Google.Apis.Auth/Google.Apis.Auth.DLL.
LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/movemanager/bin/Google.Apis.Auth.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Minor Version
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Stack Trace:

[FileLoadException: Could not load file or assembly 'Google.Apis.Auth, Version=1.69.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
Google.Ads.Gax.Lib.AdsChannel.CreateChannel(String url) +0
Google.Ads.Gax.Lib.AdsChannel..ctor(AdsConfig config, String url) +77
Google.Ads.Gax.Lib.CachedChannelFactory.GetChannel(AdsConfig config, String serverUrl) +678
Google.Ads.GoogleAds.Lib.GoogleAdsServiceClientFactory.GetService(ServiceTemplate3 serviceTemplate, GoogleAdsConfig config) +78 Google.Ads.GoogleAds.Lib.GoogleAdsClient.GetService(ServiceTemplate3 serviceTemplate) +106
movemanager.libraries.UploadEnhancedConversionsForLeads.Run(GoogleAdsClient client, Int64 customerId, Int64 conversionActionId, String conversionDateTime, Double conversionValue, String orderId, String gclid, String Email, String Phone, String FirstName, String LastName, String Zipcode, String ConvActResName, String sessionAttributesEncoded, String sessionAttributes) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:310
movemanager.libraries.UploadEnhancedConversionsForLeads.UploadConversion(String strJobID, String strStatusID) in C:\inetpub\wwwroot\movemanager\libraries\UploadEnhancedConversionsForLeads.cs:262
MyApplication.FurnitureList.btnSave_Click(Object sender, EventArgs e) in C:\inetpub\wwwroot\movemanager\furnitureList\furnitureList.aspx.cs:903
System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +139
System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +150
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1959

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.9316.0

I tried using dotnet-depends but it wasn't much help in determining the problem, and also tried 'dotnet nuget why' but since
my project is in an older format it couldn't show the dependencies. I also tried to convert the project from using packages.config
to the PackageReference format but that failed also (see error message image)

I am going to try using a standalone EXE program to use the Google.Ads API library since it doesn't seem to work with the Google.Apis.Sheets library also installed.

Thanks again for the help!

[Zweitze]

When upgrading from Google.Ads.GoogleAds v22.1 to v24.1.1, I experienced a very similar problem:

System.IO.FileLoadException:
Could not load file or assembly 'Google.Apis, Version=1.68.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

I was pretty sure that I had Google.Apis version 1.69 (yes a higher version!) installed when the problem arrived.
Anyway, after updating package Google.Cloud.BigQuery.V2 (also used in project) from 3.10.0 to 3.11.0 the problem went away.

[itallstartedwithaidea]

Without seeing the specific error, here are the most common issues with the .NET Google Ads library:

1. Auth configuration: The library expects credentials in GoogleAdsApi section of your config. The most common mistake is mixing up DeveloperToken, OAuth2ClientId, OAuth2ClientSecret, and OAuth2RefreshToken — all four are required for OAuth.

{
  "GoogleAdsApi": {
    "DeveloperToken": "your-dev-token",
    "OAuth2ClientId": "your-client-id.apps.googleusercontent.com",
    "OAuth2ClientSecret": "your-secret",
    "OAuth2RefreshToken": "your-refresh-token",
    "LoginCustomerId": "1234567890"
  }
}

2. LoginCustomerId: If you're accessing accounts through an MCC (manager account), you MUST set LoginCustomerId to the MCC account ID (no dashes). This is the #1 missed step.

3. API version mismatch: Make sure your NuGet Google.Ads.GoogleAds package version matches the API version you're targeting. v23 requires Google.Ads.GoogleAds >= 21.0.0.

4. gRPC errors: If you're getting transport-level errors, the .NET library uses gRPC under the hood — firewall/proxy configurations that block HTTP/2 will cause failures.

If you can share the specific error message, I can narrow it down further. I've worked through similar auth and configuration issues across the Python client library in my Google Ads MCP server: itallstartedwithaidea/google-ads-mcp-server