azure-webjobs-sdk Loader Exceptions

We have a webjob using v3 of Webjobs SDK and the target framework is set to net462 .

couple of webjob are based on TimerTrigger while others are based on QueueTrigger

When it starts we seeing the below warnings/exceptions for loading

Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly:

Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
Could not load type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' from assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.Assembly.GetTypes() at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies)

There seems to be a similar issue #1493 already listed but the assembly name differ from the one in my case.However this is marked closed.

The project has following references.

is there a way that the warning/exception can be resolved ? Does not affect the functionality in any way

Dec 15 '18 08:12 mgardi85

Does the workaround in the referenced issue (#1493) work for you?

Jan 09 '19 19:01 fabiocav

if the workaround you are referring to is basically to target netStandard13 then we cannot do as we have dependencies targetting netStandard20. Do you want me to give it a try against 2.0

Jan 23 '19 16:01 mgardi85

How can I do the hack mentioned in #1493, using path hint, using DevOps build pipeline (does package restore then build solution etc). Even on my company dev machine I have to look where the "packages" folder resides...

Jan 28 '19 13:01 postb99

This is still happening for me.No solution yet

On Tue, Mar 5, 2019 at 5:25 PM Nick Sevens [email protected] wrote:

I have the exact same error message (targeting net472). Did you manage to fix this @mgardi85 https://github.com/mgardi85 ?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/Azure/azure-webjobs-sdk/issues/2060#issuecomment-469653044, or mute the thread https://github.com/notifications/unsubscribe-auth/ArxFV8-ilE9qiukx2X25ld-YpV0iaa1sks5vTlsvgaJpZM4ZUorS .

-- Regards Mehul Gardi

Mar 06 '19 06:03 mgardi85

We have the same problem warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - Impossible de charger le type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' à partir de l'assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Impossible de charger un ou plusieurs des types requis. Extrayez la propriété LoaderExceptions pour plus d'informations. à System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) à System.Reflection.Assembly.GetTypes() à Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable 1 extensionAssemblies) dans C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:ligne 115

warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - La méthode 'Commit' du type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' de l'assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' n'a pas d'implémentation. - Impossible de charger le type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' à partir de l'assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Impossible de charger un ou plusieurs des types requis. Extrayez la propriété LoaderExceptions pour plus d'informations. à System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) à System.Reflection.Assembly.GetTypes() à Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable; 1 extensionAssemblies) dans C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:ligne 115

warn: Host.Startup[0] No job functions found. Try making your job classes and methods public. If you're using binding extensions (e.g. Azure Storage, ServiceBus, Timers, etc.) make sure you've called the registration method for the extension(s) in your startup code (e.g. builder.AddAzureStorage(), builder.AddServiceBus(), builder.AddTimers(), etc.).

Jun 06 '19 19:06 FranckSix

Ran into the same issue as well.

System.InvalidOperationException: Exception binding parameter 'log' ---> System.TypeLoadException: Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.

Jul 14 '19 14:07 ai-motion

Come on guys, this issue has been outstanding for ages, please fix it. I've finally managed to get V3 running (the V3 project templates STILL don't compile and the documentation to just get up and running isn't at all clear) and this is what I get:

warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - Could not load file or assembly 'System.ComponentModel.Annotations, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.6.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. - Could not load type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' from assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.RuntimeModule.GetTypes() at System.Reflection.Assembly.GetTypes() at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115

Jul 30 '19 23:07 nicholastic

Plagued by same issue. Can I just say "wow" to Microsoft? :)

Oct 03 '19 09:10 AbhishekTripathi

Thank you for the ping and apologies about this getting lost in triage.

I'm reassigning this to the proper milestone for investigation.

In the meantime, @AbhishekTripathi, can you confirm that your setup and error is identical to what was originally reported? (as that is what we'll be using for investigation)

Oct 03 '19 16:10 fabiocav

No. The warning I still see. But we are anyways planning to move the entire stack to net standard /net core. Hope it is resolved by then.

On Tue 5 Mar, 2019, 5:25 PM Nick Sevens, [email protected] wrote:

I have the exact same error message (targeting net472). Did you manage to fix this @mgardi85 https://github.com/mgardi85 ?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/Azure/azure-webjobs-sdk/issues/2060#issuecomment-469653044, or mute the thread https://github.com/notifications/unsubscribe-auth/ArxFV8-ilE9qiukx2X25ld-YpV0iaa1sks5vTlsvgaJpZM4ZUorS .

Oct 04 '19 11:10 mgardi85

@fabiocav I am using v4.8 of the framework. Sadly, I can't move to dotnet core in this case because I rely on Saxonica for XSLT 2.0 transformations and this library only works with full framework. XSLT 2.0 transformation isn't supported natively by Microsoft stack (surprisingly true) and there is no third party free or paid alternative for dotnet core yet. A major pain but one of the perils of being a dotnet developer where Java and alternatives have a major edge in this regard.

Oct 09 '19 09:10 AbhishekTripathi

is this issue still not resolved?

Mar 02 '20 18:03 rickdtully

It's frustrating to see webjobs clutter up with unsolvable warnings every time they run. Can you please try to resolve this?

Mar 02 '20 21:03 nicholastic

still the same year old issue. Agree with @nicholastic it is very frustrating.

  Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
  The following loader failures occured when trying to load the assembly:
     - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
     - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
     - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
     - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.
     - Could not load type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' from assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.
  This can occur if the assemblies listed above are missing, outdated or mismatched.
  Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
     at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
     at System.Reflection.Assembly.GetTypes()
     at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115

Apr 08 '20 23:04 joelcdp

It's still there:

[04/14/2020 17:47:27 > 16a40b: INFO] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 [04/14/2020 17:47:27 > 16a40b: INFO] The following loader failures occured when trying to load the assembly: [04/14/2020 17:47:27 > 16a40b: INFO] - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. [04/14/2020 17:47:27 > 16a40b: INFO] - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. [04/14/2020 17:47:27 > 16a40b: INFO] - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. [04/14/2020 17:47:27 > 16a40b: INFO] - Method 'Commit' in type 'Microsoft.Azure.WebJobs.Host.Blobs.Bindings.DelegatingCloudBlobStream' from assembly 'Microsoft.Azure.WebJobs.Extensions.Storage, Version=3.0.10.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. [04/14/2020 17:47:27 > 16a40b: INFO] - Could not load type 'Microsoft.WindowsAzure.Storage.Table.TableQuerySegment' from assembly 'Microsoft.WindowsAzure.Storage, Version=9.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. [04/14/2020 17:47:27 > 16a40b: INFO] This can occur if the assemblies listed above are missing, outdated or mismatched. [04/14/2020 17:47:27 > 16a40b: INFO] Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. [04/14/2020 17:47:27 > 16a40b: INFO] at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) [04/14/2020 17:47:27 > 16a40b: INFO] at System.Reflection.Assembly.GetTypes() [04/14/2020 17:47:27 > 16a40b: INFO] at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115`

Apr 14 '20 18:04 greglecki

I have the same problem. I would appreciate a fix.

Apr 21 '20 10:04 oviradoi

@oviradoi @greglecki @joelcdp is your setup identical to what @mgardi85 listed in the original issue (target, dependencies, etc.)? If not, can you please share your details or, better yet, a repro?

Apr 21 '20 16:04 fabiocav

@fabiocav I have created a repro here: https://github.com/oviradoi/LoaderExceptionsRepro I have included a readme file and I have implemented each step in the commit history. I hope this will help you fix this problem. If you need more info, please let me know.

Apr 22 '20 06:04 oviradoi

It looks like this issue was fixed in the Microsoft.Azure.WebJobs.Extensions.Storage v4.0.0 release

Jun 15 '20 08:06 oviradoi

Still getting this:

warn: Host.Startup[0]
      Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Extensions.Storage, Version=4.0.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
      The following loader failures occured when trying to load the assembly:
         - Could not load file or assembly 'System.ComponentModel.Annotations, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
      This can occur if the assemblies listed above are missing, outdated or mismatched.
      Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
         at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
         at System.Reflection.RuntimeModule.GetTypes()
         at System.Reflection.Assembly.GetTypes()
         at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115

Jun 16 '20 03:06 nicholastic

I have started to encounter this problem and I can not figure out why?

info: Microsoft.Azure.WebJobs.Hosting.JobHostService[0] Starting JobHost warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.RuntimeModule.GetTypes() at System.Reflection.Assembly.GetTypes() at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115 System.TypeLoadException: Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.4.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.

May 31 '22 13:05 AngelaCalboreanVisma

I've got the the same error ....

info: Microsoft.Azure.WebJobs.Hosting.JobHostService[0] Starting JobHost warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.Assembly.GetTypes() at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115 System.TypeLoadException: Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation.

Jul 11 '22 08:07 wouter-b

Install package "Microsoft.Azure.WebJobs.Host.Storage" Version="4.1.0" to fix this warning.

I used to get the warning originally posted in this issue, but with package updates it became:

warn: Host.Startup[0] Warning: Only got partial types from assembly: Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 The following loader failures occured when trying to load the assembly: - Method 'LogFunctionStarted' in type 'WebJobs.Host.Storage.Logging.PersistentQueueLogger' from assembly 'Microsoft.Azure.WebJobs.Host.Storage, Version=4.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not have an implementation. This can occur if the assemblies listed above are missing, outdated or mismatched. Exception message: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.Assembly.GetTypes() at Microsoft.Azure.WebJobs.Host.Indexers.DefaultTypeLocator.FindTypes(Assembly assembly, IEnumerable`1 extensionAssemblies) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Indexers\DefaultTypeLocator.cs:line 115

The new package resolves this warning.

Sep 19 '22 05:09 nicholastic

Microsoft.Azure.WebJobs.Host.Storage v4.1.0 fixes the warning. 👍

Sep 28 '22 19:09 valdisiljuconoks

Closing as resolved.

Jan 24 '24 21:01 satvu

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Loader Exceptions

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