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Could not write state file (creating VS project)

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Hi,

I've been seeing this warning lately when creating new projects
Could not write state file "obj\Debug\XX.rnrproj.AssemblyReference.cache". Could not find a part of the path 'C:\Users\YY\Documents\Visual Studio 2022\Projects\XX\XX\obj\Debug\XX.rnrproj.AssemblyReference.cache'.

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Dynamics 365 Finance

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DAnny3211 11,417 Super User 2026 Season 1 on at

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Hi there 👋

Thanks for your question!

The error you're encountering—"Could not write state file... Could not find a part of the path..."—typically occurs when Visual Studio is unable to locate or access the required directories during project creation or build.

✅ Here are a few steps to resolve this:

Check folder paths and permissions

Make sure the full path exists:
C:\Users\[YourUser]\Documents\Visual Studio 2022\Projects\[ProjectName]\obj\Debug\

If any folder in the path is missing, create it manually.

Correct path formatting

The error suggests that some paths are missing backslashes (\). This could be due to a misconfigured project or corrupted settings. Try recreating the project in a clean directory.

Run Visual Studio as Administrator

Right-click on Visual Studio and select Run as administrator to ensure it has permission to write to the required folders.

Clear temporary build files

Delete the obj and bin folders from your project directory and rebuild the solution.

Check for antivirus or security software interference

Sometimes, security software can block file creation. Temporarily disable it to test.

Hope this helps!
✅ Please mark this reply as helpful if it answered your question.
Best regards! 👋

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Cyrille Nembot 149 on at

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This warning typically occurs when
Visual Studio is unable to create or access files in your project's
output directory (usually the obj\Debug folder). Here are some possible causes and solutions:

Common Causes:

Missing folders in the path: The obj\Debug directory might not exist.

Permission issues: Your user account might not have write permissions to the folder.

File locking: Another process might be locking the file.

Anti-virus interference: Your anti-virus might be blocking file creation.

Path length limitations: The full path might exceed Windows' maximum path length.

Solutions:

Clean and rebuild the solution:

In Visual Studio: Build → Clean Solution, then Build → Rebuild Solution

Manually create the missing folders:

Navigate to your project directory (C:\Users\YY\Documents\Visual Studio 2022\Projects\XX\XX\)

Create the missing folders (obj\Debug) if they don't exist

Check folder permissions:

Right-click on your project folder → Properties → Security

Ensure your user account has full control

Run Visual Studio as administrator:

Right-click Visual Studio → Run as administrator

Disable anti-virus temporarily:

Try disabling your anti-virus to see if it's interfering

Check for path length issues:

If the path is very long, try moving your project to a shorter path (like C:\Projects\)

Delete the obj folder:

Close Visual Studio

Delete the entire obj folder in your project directory

Reopen Visual Studio and rebuild

Check for file locks:

Use Process Explorer to check if another process is locking the file

Repair Visual Studio installation:

Go to Control Panel → Programs → Visual Studio → Change → Repair

If none of these work, you might want to:

Create a new project and migrate your code

Check the Windows Event Viewer for more detailed error messages

Update Visual Studio to the latest version

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André Arnaud de Cal... 303,730 Super User 2026 Season 1 on at

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Hi ..,

You got two replies that most likely were generated by AI. Do you still have the issue, or have you resolved the problem already?
If you still have this issue, can you tell us what type of development environment you are using and if there were changes applied before it started to give errors?

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Komi Siabi 13,208 Most Valuable Professional on at

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Hi @DAnny3211 & @Cyrille Nembo. Your answer looks like AI generated suggestion. Kindly always make reference to the AI tool used in providing feedback.

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Sagar121 1,160 Super User 2026 Season 1 on at

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Hi,

I will try below initially.

Can you please try to un-map and re-map Project Folder.

Also, pls right click on solution explorer and try to un-load and reload the Project.

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Bret Fraser Community Manager on at

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Thanks for posting @DAnny3211, we appreciate your desire to help the Community!

I think your reply might be an AI-assisted post, but I do not see any tools or sources cited. Can you update the post to include your sources, or confirm this was not produced using AI?

Please refer to the Use AI responsibly section of Writing effective responses in the community:

Do not

Copy and paste AI-generated answers into the forum without verification. While AI is a valuable tool, it is not always correct, and can provide detailed answers that look correct, but are not.

Conceal the use of AI. If your answer was written in concert with AI, be forthright about it to ensure that others have an opportunity to review or vet your response for accuracy.

Thank you!

Bret

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Bret Fraser Community Manager on at

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Thanks for posting @Cyrille Nembot, we appreciate your desire to help the Community!

I think your reply might be an AI-assisted post, but I do not see any tools or sources cited. Can you update the post to include your sources, or confirm this was not produced using AI?

Please refer to the Use AI responsibly section of Writing effective responses in the community:

Do not

Copy and paste AI-generated answers into the forum without verification. While AI is a valuable tool, it is not always correct, and can provide detailed answers that look correct, but are not.

Conceal the use of AI. If your answer was written in concert with AI, be forthright about it to ensure that others have an opportunity to review or vet your response for accuracy.

Thank you!

Bret

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