I am new to this website and am seeking some advice.. A months ago I have created Microsoft Access database. I could open it at the beginning, but now I am struggling with this error message: Unexpected error 35012.

Do you have any suggestions how to work around it? Any suggestions ideas would be great.

You are getting this error 35012 due to a corrupted object, such as a form, in your database.
To resolve this error message, follow these steps:

Create a new Microsoft Access database.

On the File menu, point to Get External Data, and then click Import. Import
all database objects (tables, queries, forms, reports, macros, and modules)
into the new database.

If you receive the "Unexpected error 35012" error message when you import a
specific database object, repeat step 2, but exclude that object and restore
the damaged object from a good backup.

For more detailed information on how to repair Access error codes you can find here https://access.recoverytoolbox.com/

Hope this works!