Cannot open projects

[Harveyn4444]

I am running Arduino 2.3.5 on Windows 10 Pro and am running into some strange behavior from the IDE.

When I start the IDE it will open an old/previously opened project (as expected) but if i try to open another .ino file from the file explorer, it will open a new project tab but will open the original project which opened on boot of the IDE, now having two of the same project open.

No matter how many times I try to open a new file, it will just open another instance of the originally booted project.

I did manage to work around this by using the open file option in the IDE, which would then open the expected project as normal, but now even that doesn't work where it will open the originally opened project like mentioned.

Please let me know what other information will be useful.

[per1234]

Hi @Harveyn4444. This is a duplicate of #2678, which has already been fixed by #2686.

The fix is in the latest release, Arduino IDE 2.3.6. So you only need to update your IDE installation and the problem will be fixed. Unfortunately the auto-update feature is broken in Arduino IDE 2.3.5. The auto-update bug has already been fixed in 2.3.6, so it won't be a problem going forward, but this means that you can't use the normal procedure to update Arduino IDE 2.3.5 to 2.3.6. You should instead download Arduino IDE 2.3.6 from the "Software" page on the arduino.cc website, then install the downloaded file:

https://www.arduino.cc/en/software/

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In the future, please make sure to always test using the latest nightly build of Arduino IDE before submitting an issue in order to avoid creating duplicates.

Or if you only want assistance using Arduino IDE (or any other Arduino-related subject), then you are always welcome to post over on Arduino Forum, where we are much less formal about such things:

https://forum.arduino.cc/c/development-tools/ide-2-x/93