"The file format and extensions of '[filename].xls' don't match. The file could be corrupted or unsafe. Unless you trust its source, don't open it. Do you want to open it anyway?"
This message occurs when you open the .xls file created from Inquiry Export to Excel.
This resolution also works if the Export to Excel button is missing after upgrading.
Potential causes
CAUTION: Sage support can't assist with third-party products, hardware, report customizations, or state and federal tax questions. Refer to our Scope of Support for more info. Contact your Sage business partner, network administrator, or accountant for assistance.
As of Version 25.1, the file extension for inquiries exported to Excel is .xlsx. We no longer use the extension .xls.
This resolution also works if the Export to Excel button is missing after upgrading.
This Sage 300 Construction and Real Estate feature relies on Microsoft Excel controls to export the query to Microsoft Excel. This occurs due to an issue with the Excel installation, an Excel update, or other factors on the system. Sage Support can't troubleshoot. Below are workarounds. Contact Microsoft Support for assistance with Microsoft Excel.
Information
Uninstall
Reinstall