Hey there Rochelley,
Using a new computer is exciting, but it's important to have everything in working order, too. I'll do what I can to help you resolve this.
When installing QuickBooks Desktop, it's generally important to have other programs that'll link to it in any way installed first. That way you can ensure that QuickBooks will "see" and know which program to choose when you're doing things such as exporting to Excel. With what you've described above, it sounds like QuickBooks Desktop was already installed when you used the install disc for Microsoft Office 2010. Since QuickBooks has already picked up the newer version of Excel first, it's still looking for it when you're trying to export.
To solve this, please uninstall both programs and reinstall Office 2010 first and QuickBooks Desktop second. Leave the new version of Microsoft out completely since you don't want it. Doing it this way, QuickBooks should now know which Microsoft you want it to use. If needed, try a clean uninstall/reinstall for QuickBooks Desktop.
If after doing this you're still running into trouble, please call QuickBooks Desktop support, Microsoft support, or both if necessary. QuickBooks Desktop agents can help rule out any connectivity issues between the two programs from our side of things. Sometimes the Microsoft team needs to get involved for some further troubleshooting. Here's how you can get in touch with both.
QuickBooks Desktop support is available at 1-877-772-9158. The line is open 24 hours for Pro and Premier users, while Enterprise support is available Monday to Friday from 9 a.m. to 8 p.m. EST.
Here's a link for Microsoft's Canadian Support: https://support.microsoft.com/en-ca/contactus/. There may even be a more specific team listed on the disc or its box.
I hope that helps!
