The standard printto verbs are used by Windows to associate file extension with application responsible for printing of files with given extension. For example, to print text document (*.txt) notepad.exe application usually used. To print files with .doc and .rtf extensions Microsoft Word is used. Printing PDF is usually associated with Acrobat Reader etc... To print files in different graphics formats shimgvw.dll system library or Paint application typically used.

Windows Fax and Scan and Fax Voip FSP applications use printto functionality in the following cases:

• When creating a fax using the New Fax command in Windows Fax and Scan and then adding document by selecting Insert -> File Attachment... .
• When selecting Send to -> Fax recipient command from the context menu of the file in Windows Explorer.
• When creating a fax using the New Fax command in the Fax Voip FSP Control Panel or by using Send a fax command from the context menu associated with Fax Voip FSP icon in the system tray.
• When using Mail to Fax function (FaxDocument.ConnectedSubmit and FaxDocument.ConnectedSubmit2 methods, Fax Service API)
• When sending a fax using SendFax.exe command line tool (FaxDocument.ConnectedSubmit and FaxDocument.ConnectedSubmit2 methods, Fax Service API)

The described printto functionality is very useful, but it depends on the applications installed on the system and the settings made ​​by the user. Lack of correct file associations leads to inoperability of the above functions with certain file extensions. Even in the case of well-known extensions, the file association can be corrupted when you install new application. Starting with Windows Vista not possible to configure printto file associations via user interface. In Windows 11, Windows 10 and Windows 8 / 8.1 the default associations do not allow the use printto with most of file extensions. In Windows Server OS this problem is not present because new Windows Store apps is not installed by default.

The function described in this chapter restores correct file associations for standard file types, and also solves some other printing problems.

Note, that in Windows 11 and Windows 10 the function described in this chapter not always resolves all the issues and the file associations should be assigned manually, see To manually fix file associations in Windows 11 and Windows 10 chapter of this user manual.

Printto options

Click to read how to manually fix file associations in Windows 11 and Windows 10

Click to open To manually fix file associations in Windows 11 and Windows 10 chapter of this user manual. The chapter contains information important for Windows 11 and Windows 10 users. The information may also be useful for users of other operating systems, such as Windows 8/8.1 or Windows Server 2022/2019/2016/2012/2012R2.

<Repair ‘printto’ verbs>

Use this button to fix standard printto file associations and solve some other printing problems. To use this option, administrator privileges are usually required. Administrator rights are requested only when necessary.

Depending on the operating system, the function solves the following issues:

On Windows 11 / 10 / 8 / 8.1 64-bit and Windows Server 2019 / 2016 / 2012 / 2012R2

Fixes printing from windows service. Well-known bug. The application does not see printers. In the case of calling FaxDocument.ConnectedSubmit2 method (Fax Service API) application hangs. In other cases the printing fails. Critical when running Mail to Fax function as Windows Service.

On all operating systems

Repairs standard ‘printto’ verbs for standard ProgID classes. The currently supported ProgID classes are: txtfile, giffile, jpegfile, pjpegfile, pjpegfile, pngfile, TIFImage.Document, wdpfile, PBrush, emffile, rlefile, wmffile, Paint.Picture, icofile.

On all operating systems

Repairs standard ‘printto’ verbs for standard file extensions under current user account. The currently supported file extensions are: *.txt, *.bmp, *.dib, *.emf, *.gif, *.ico, *.jfif, *.jpe, *.jpeg, *.jpg, *.jxr, *.png, *.rle, *.tif, *.tiff, *.wdp, *.wmf. In Windows 11 and Windows 10 the file associations should be assigned manually, see To manually fix file associations in Windows 11 and Windows 10 chapter of this user manual.

Notes

• The Repair ‘printto’ verbs function is always performed during Fax Voip FSP program installation. However, at the time of installation the function is initially executed with administrator privileges, ie excluding the settings of the current user. We recommend that you run this function after Fax Voip FSP installation, and in the case of problems with printing.
• The log file printto_fix.txt is always stored in the {CommonAppDataFolder}\FaxVoip FSP\log folder, where {CommonAppDataFolder} is the system file directory containing application data for all users. The name of this folder is usually C:\ProgramData.
• For Windows 11 and Windows 10 users, see also To manually fix file associations in Windows 11 and Windows 10 chapter of this user manual.