Can't able to save anything in Visual Studio

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Posted on by Viswanath M

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I have my custom tables and form in d365fo dev environment. while saving any new changes it stops me from saving changes and throws object reference not set to an instance error

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Layan Jwei 8,118 Super User 2025 Season 2 on at

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Hi Viswanath,

Does the error appear at a certain line of code? If so review the code and ensure that u fix anything u find wrong

If the error is appearing when saving changes to a form, review the form design and that you didn't miss anything

Maybe take a screenshot and show us?

Also make sure you are opening VS as an admin. Also maybe try to close VS and open it again.

Another thing you can try is building the project or your module.

Thanks,

Layan Jweihan
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Viswanath M 128 on at

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I have tried all the steps you're mentioning.

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Layan Jwei 8,118 Super User 2025 Season 2 on at

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Hi Viswanth,

The screenshot you shared is about a class and not tables/forms. So is this class is created by you?
how about you delete this class or at least delete the changes you made on it if it was checked in before, then build your project, close VS and create it again or add your new changes again?

Thanks,

Layan Jweihan

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Kevin Xia Microsoft Employee on at

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Hi,

Here are a few steps you can try:

Make sure all the required projects and references are properly loaded in Visual Studio.

Double-check that the necessary dependencies, such as DLLs or packages, are correctly referenced and available.

Clean and rebuild your solution to ensure that all the code and dependencies are compiled properly.

Check if there are any missing or incomplete configurations in your project or solution, such as connection strings or environment settings.

Verify that you have the necessary permissions and access rights to modify and save objects in the development environment.

Best regards,

Kevin

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Viswanath M 128 on at

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I solve this issue by deleting and re-installing the Finance and operation(D365) extensions and then I remove the cache memory of the visual studio.

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