Anyone able to help?

Try this:

https://support.na.sage.com/selfservice/viewdocument.do?noCount=true&externalId=54008&sliceId=1&isLoadPublishedVer=&docType=kc&docTypeID=DT_Article&stateId=31539&cmd=displayKC&dialogID=1351570&ViewedDocsListHelper=com.kanisa.apps.common.BaseViewedDocsListHelperImpl&openedFromSearchResults=true

Try this:

https://support.na.sage.com/selfservice/viewdocument.do?noCount=true&externalId=54008&sliceId=1&isLoadPublishedVer=&docType=kc&docTypeID=DT_Article&stateId=31539&cmd=displayKC&dialogID=1351570&ViewedDocsListHelper=com.kanisa.apps.common.BaseViewedDocsListHelperImpl&openedFromSearchResults=true

From BShockley's response above, "Possible Resolution 2" is what worked for us.  We copied the registry information (which is what is showing below) from the "old" laptop to the "new" laptop and the Excel button is back.  Thank you BShockley!!!

Possible Resolution 2:

• Verify the following registry entry is present on the computer: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00020810-0000-0000-C000-000000000046} with the data of (without the quotes): "Microsoft Excel 95 Worksheet". If this is missing then copy it from another workstation
  • Note: In at least two cases where the key did exist, editing the "Microsoft Excel 95 Worksheet" by typing over the existing text, then saving, resolved the issue.
  • Note: This is a dated resolution. It may not work, or the key may be different due to newer versions of Microsoft Office/Excel.