Opening multiple worksheets causes vba issues

[insomniac53]

When opening more than one workbook in Excel (latest Office 365 version) VBA code does not know which workbook it belongs to. For example, suppose you have two workbooks open and you switch from one to the other, perhaps using ALT-TAB. Any procedures or functions referring to a particular sheet will crash because it's looking in the active workbook, not the one it belongs to.

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This is fine until another workbook has been opened at which point the code fails, even if this is the active one on screen. I understand that you could specify a workbook and sheet within a single function, but this isn't feasible when you have many functions using the simple Sheets command above - you would need to alter each one individually.

Could someone tell me if there is a way around this on a global level so that when switching from workbook to workbook, the vba code knows which one it belongs to? Thank you.

[tim201110]

with your wb it'd be easier to help

[insomniac53]

with you wb it'd be easier to help

Not sure what this means!

[kersplash]

Attach a workbook.

Go Advanced -> manage Attachments -> Upload

[insomniac53]

Attach a workbook.

Go Advanced -> manage Attachments -> Upload

Ah, okay, but sorry, can't do that. It's a complex workbook with private information that could affect the destiny of the world...

[kersplash]

Don't need the entire workbook, just enough to demonstrate the issue.

[insomniac53]

Apologies, I really can't do this. There are 20+ sheets in the workbook, all interconnected. Impossible to create a subset. It isn't a specific bug in one line of code. Switching to another workbook, for example via ALT-TAB, causes the initial workbook to fail at different points when I return to it, wherever there is a reference to a sheet or a form. Excel seems to lose focus and is looking for these sheets and forms in the wrong workbook.