Issues with the Microsoft Graph library

TomasNajman

I'm going to create a project where I'll just add the Microsoft Graph library.

When I want to add a directory or a file, it takes a very long time to add it. The same thing happens when renaming and deleting.

I don't know if there's a problem with the length of the class name in this library. If I open the class file, I can add "use". If the class file is not open, it returns PHP0413.

Could you take a look at it?

Thanks

Product: PHP Tools for Visual Studio
Version: 1.89.19068.2022
Release Date: 13. července 2026
License: The product has been activated successfully.
Visual Studio: 18.7

JakubMisek

TomasNajman, thank you for reporting the issue.

This is most probably a corrupted cache.

Delete the contents of the following directory and reload your project/solution

%localappdata%\DEVSENSE\packages-cache

We'll try to avoid that in future updates.

JakubMisek

When I want to add a directory or a file, it takes a very long time to add it. The same thing happens when renaming and deleting.

This may be a limitation of the Visual Studio project - in our case, /vendor/ may be too large. We have tested < 100 000 files in vendor, and the project works fluently, but it's worth trying the fix -

The fix: Exclude vendor from project (the vendor folder will still be indexed, and everything will work the same)

To show vendor while excluded from project: Show All Files

TomasNajman

Thanks for the reply.

Clearing the cache didn't help.

The vendor's fix didn't help. But it did speed things up a bit. Unfortunately, it's unusable when deleting multiple files. Deleting only outside the project.

JakubMisek

TomasNajman, thank you,

Do you see any errors/warnings in the Output window / General tab?

TomasNajman

No errors are displayed.

JakubMisek

TomasNajman, is it happening just with this particular class (CreateUploadSessionPostrequestBody)?

It looks like this class is being generated, may I ask:

What is the path to the file containing this class? The editor may ignore the containing folder for some reason.

TomasNajman

We only use Microsoft Graph partially. We only have a problem with this class. The path to the class is ...\vendor\microsoft\microsoft-graph\src\Generated\Users\Item\Messages\Item\Attachments\CreateUploadSession\CreateUploadSessionPostRequestBody.php

JakubMisek

TomasNajman , thank you for the details.

Right, we ignore modifications in the vendor folder after it's cached; hence, files generated there are ignored (unless explicitly opened in the editor).

I think we can work around that in the next update.

Quick workaround for now: add the 'vendor\microsoft\microsoft-graph\src\Generated' folder to the Include Path in Project Properties -> Settings

TomasNajman

JakubMisek
The workaround solves the class problem, but Visual Studio 2026 is very slow. If I write some code, it takes a few seconds to display. Visual Studio then continues to use the CPU. If I remove the workaround, the editor behaves normally.

JakubMisek

TomasNajman, we'll try to repro the issue.

How many files are there in the Generated folder?
Do you see progress in the lower-left status icon?

TomasNajman

In the msgraph-sdk-php library there are 37,665 files in the Generated folder. Files in the Generated folder are not generated, but are part of the library.

Number of files in the entire project: 81,546
Number of files in the vendor folder: 53,367
Number of files in the node_modules folder: 25,640

Indexing took about 15 minutes. Below are some pictures:

I don't know why it indexes more files than there are files in the project. The "include path" option is set in the project as per your recommendation.

Info about Visual Studio:
Product: PHP Tools for Visual Studio
Version: 1.89.19126.2022
Release Date: 28. července 2026
License: The product has been activated successfully.
Visual Studio: 18.8

I don't know if this information will help you.

If I don't have the "Include Path" option checked, loading is fast.

Disk operations take a long time and Visual Studio stops responding. For example, just creating a file takes ten seconds. Deleting multiple files at once can take up to a minute. But without this library, everything works faster. Creating a file takes three seconds.

JakubMisek

Thank you,

I thought it was generated because my microsoft/microsoft-graph v3.4.0 did not have those files in my case; Anyways, the include_path is unnecessary, and the issue is caused by Windows and long paths;

1/ First, I would recommend excluding your project folder from the antivirus software. Files are read quickly in parallel, and it (specifically Microsoft antivirus) sees it as suspicious (it slows reading up to 1000x).

2/ The microsoft/microsoft-graph library contains directories and files with very long paths; if your project root is also nested, this may be the limitation. Then files with too long paths (>260) may be ignored by Visual Studio.
Workaround for now is to move the project to a shorter path. Delete %localappdata%\DEVSENSE\packages-cache before opening the project.
The next update will deal with the long paths under the vendor folder properly.

3/ Slow adding/removing files is usually caused by too many files in the Visual Studio solution - first I would check the vendor folder is excluded:
either using the context menu:

or like this in .phpproj project file (the same):

  <ItemGroup>
    <Content Remove="*.tmp" />
    <Content Remove="vendor\**" />
  </ItemGroup>

4/ slow code completion (IntelliSense) in this case is our issue and we'll fix in the next update.

TomasNajman

Thanks for the answer.

I assumed long paths. The problem with the Microsoft Graph library was solved by this. As I searched, it is a Visual Studio problem that has been solved for several years. According to the latest information, they will continue to solve it for several years. Unfortunately.

Exclude helped a little, but with this setting:

  <ItemGroup>
    <Compile Remove="vendor\**" />
    <Content Remove="vendor\**" />
    <None Remove="vendor\**" />
  </ItemGroup>

Thanks for your time. It is a Visual Studio problem and we will not solve it. Even though I tried different settings, if there are many files and folders in the folder, it is simply slow.

JakubMisek

TomasNajman thank you for the update.

Long paths in 'vendor' can be work-arounded by our extension. It will be fixed in the upcoming pre-release.

JakubMisek

@TomasNajman please try the pre-release 1.89.19140.

Delete %localappdata%\DEVSENSE\packages-cache before starting Visual Studio.
I recommend excluding the project folder from the antivirus software.
The pre-release fixes long paths, and improves completion speed.

For reference, my load times are ₈ seconds once the vendor folder is cached.
And IntelliSense popup <500ms in global code (listing >50 000 symbols), and <50ms when completing object members.

TomasNajman

Thanks, the errors are no longer displayed. I only had a slowdown when using include_path.

It remained the same with those disk operations. I tried turning off the antivirus (exclude the project folder), but it didn't help. Turning off indexing in Visual Studio didn't help either. When adding or deleting a file, it takes 5 seconds for me. But this is probably caused by Visual Studio. Visual Studio completely freezes during the addition or deletion. If you don't think of anything, I would consider it finished.

JakubMisek

TomasNajman good,

At this point, you don't need include_path at all - you can clear this setting because we properly index files in vendor now.

Definitely have vendor excluded from the project as you mentioned above:

<ItemGroup>
    <Compile Remove="vendor\**" />
    <Content Remove="vendor\**" />
    <None Remove="vendor\**" />
  </ItemGroup>

If you still have > 50 000 files in your project (excluding vendor), Visual Studio may still be slow with disk operations. We'll do more tests.

TomasNajman

I didn't use the include_path setting. I only noticed the slowdown with this setting.

There is also a node_modules folder in the project, but I have it excluded too. Without vendor, there are 28 thousand files in the project. There are 25.5 thousand files in node_modules. So the project has about 3.5 thousand files (with CSS, JS, images, etc.).

JakubMisek

TomasNajman 3,5k sounds ok. We'll do more tests if we can improve the file operations in Visual Studio somehow (maybe there'll be some setting ...)