Problem in connecting with excel

[msan (Michel SAN)]

Please restart your Microsoft Excel application

• Use key combination [Windows] + R
• Paste the following command:
  taskkill /f /im excel.exe
• Press [Enter] key

Make sure Excel is installed

Use Microsoft Office Repair utility:

• from Programs and Features
• find Microsoft Office in the list
• click on it
• Click on “Modify”
• Chose repair option

(screenshots in french but it should help you to get an idea)