Bug: Illustrator won't work if left open for a long time. Needs resetting.

Hi @MAX2025_Ideas,

Thanks for reaching out and sharing your experience. Could you please confirm which version of Illustrator and operating system you're currently using when this happens?

In the meantime, try closing any unused documents or background applications if Illustrator has been open for an extended period, as memory build-up over time can cause this behavior. Also, please confirm if you're using any third-party plugins or extensions. If yes, try disabling them temporarily or launch Illustrator in Safe Mode to check if the issue still occurs.

Windows: https://adobe.ly/4qC3v08
macOS: https://adobe.ly/47LsoPv

Also, could you confirm if the issue occurs only when using an external monitor or even when working solely on the primary display? 

If you haven't already, try manually resetting Illustrator preferences after creating a backup and then relaunch the app: https://adobe.ly/47LsiaB

A short video reference: https://adobe.ly/4qzXt01

Please let me know how it goes after testing this.

Abhishek