How to unlock Excel 2013 Worksheets

Hi, I have been asked to modify the attached workbook but the first tab is locked - the creator is no longer in the company.  Can anyone help me unlock the sheet so I can edit it?  

Thanks so much

Philippa HorneAsked:
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Brian BEE Topic Advisor, Independant Technology ProfessionalCommented:
The only supported solution is copy the entire worksheet (Ctrl+Home, Ctrl-Shift-End, Ctrl-C) and paste to a new worksheet.

Cracking passwords is not something permitted on Experts-Exchange, but there are programs available on the internet that claim to be able to do it.

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Philippa HorneAuthor Commented:
Ahh sorry I did not realise that - I will remove thanks
Brian BEE Topic Advisor, Independant Technology ProfessionalCommented:
No you can still use the instructions provided. We just can't tell you how to crack a password or recommend anything specific that can.
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