Chat with our virtual assistant
Hot topics - Week of June 17, 2024
NEW: Changes to telephone services
Please refer to the Contact Us section of our corporate website to learn about changes to our telephone service schedule, and to view the list of products now supported exclusively through web tickets and live chat.
Web tickets and live chats are given priority over calls
For a faster service, connect to our Support Platform to create a web ticket through our virtual assistant who will either offer you to submit your case or to chat live with an agent. Consult this article for more details: How do I create a support case or initiate a live chat?
Most consulted articles in the Knowledge Base (as of June 17, 2024)
  1. The federal T1 return is rejected by the CRA with error code 70127.
  2. How do I register to the new '''' Support Platform?
  3. How do I reset my password on the '''' Support Platform?
  4. CRA EFILE ERROR - 90315 - The federal T1 return is rejected by the CRA with error code 90315.
  5. How do I update my support case on the '''' Support Platform?
  6. CRA EFILE ERROR 110-B: T1 return is rejected with error code 110-B for filer
  7. How do I import slips into the Taxprep Forms program?
  8. Taxprep T1 - How to import the data from the Pre-bankruptcy to create the Post-bankruptcy return?
  9. EFILE rejection error E1, 451 or T802 for a return in CCH iFirm Taxprep
  10. T2 - The RQ Web service is not available or the Internet connection could not be established
Date: 2022-Dec.-19
Cantax FormMaster
System Requirements

To correctly execute the latest version of Cantax FormMaster, your computer system must have the following:


Dual Core processor (Quad Core processor is recommended)

Supported operating systems
  • Windows 10 (64-bit) except for Education and Home Editions*
  • Windows 11 (64-bit) except for Education and Home Editions*
  • Windows Server 2012 R2
    (As of October 2023, our programs will no longer support this OS.)
  • Windows Server 2016
  • Windows Server 2019
  • Remote Desktop Services in Windows Server 2012 R2, 2016 and 2019
  • Citrix XenApp 7.11
Note: Please note that custom scaling is not supported.
* For more information on the different Windows Editions, and their respective minimum requirements,
consult the Microsoft Web site:
Important: We strongly recommend that all customers enable the enhanced security measures available in Windows 10 or higher operating system, including SMB 3.0 encryption for data in transit. Since the configuration of SMB 3.0 is explicit, please consult this Microsoft article to proceed with its configuration.

A minimum of 4 GB of RAM is required.

Note: RAM requirements are highly dependent on the operating system used. Consult the documentation provided with your operating system for minimum and recommended RAM requirements.

Microsoft .Net Framework

Microsoft .Net 6.0.2 or higher is required.

Network File Systems
  • NTFS
  • FAT32
  • exFAT
Internet Connection