I think you'll have to much more specific to get any useful response.

But I've used many workbooks that were marked readonly (to stop updates) and the
macros worked fine. So I don't think just having the workbook open in readonly
mode is enough to cause the problem.

Alex wrote:

I've created an excel workbook with forms, reporting (lots of coding in VB).
If it's opened only on a one machine it's working well. But, if somebody
opens it read-only and does some reporting (that should be Ok for the
read-only mode), there is always a problem and odd data (empty reports, etc.)

Could I fix it somehow?

Thanks

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Dave Peterson