You have Microsoft Office Click-to-Run 2010 installed on the computer.
You try to send a document as an Internet Fax.
In this scenario, your fax service provider is not recognized as a valid fax service.
This issue occurs because Office Click-to-Run 2010 is installed within the virtual application space that is created by the Microsoft Click-to-Run technology. Therefore, your fax service provider is not found on the computer.
To resolve this issue, you have to install the .msi-based installation of Microsoft Office 2010.
To do this, uninstall Microsoft Office Click-to-Run 2010. Then, install Microsoft Office 2010 from an installation DVD or from another installation point.
To determine whether you are running a Microsoft Office Click-to-Run 2010 installation, click the File tab, and then click Help. If there is a Click-to-Run Product Updates section, then you are running a Click-to-Run installation.
To uninstall the Microsoft Office Click-to-Run 2010 installation, follow these steps:
Click Start, and then click Control Panel.
Click the Add or Remove Programs item or the Programs and Features item.
In the list of installed programs, click Microsoft Office Click-to-Run 2010, and then click Uninstall.
Click Yes when you are prompted to remove all applications that were installed by Office Click-to-Run. For example, you may be prompted to remove Microsoft Office Home and Business 2010 or Microsoft Office Home and Student 2010.
To send a document as an Internet Fax in a Microsoft Office 2010 program, click the File tab, click Save & Send, and then click Send as Internet Fax.
Note To use the fax service to send your fax, you must first sign up with a fax service provider.