Chat with our virtual assistant
Hot topics - Week of May 25, 2025
End of Phone Support: Benefit from our Advanced Virtual Agent 24/7!
Since January 1, 2025, the customer support teams offers its high-quality service exclusively through digital channels, and no longer offers incoming phone support. Click here for more details on this matter.
Register for our support platform and log in to our virtual agent to find answers, submit a support ticket or chat with a live agent.

Watch videos to find out everything you need to know about the support platform:
Last week most consulted articles from our Knowledge Base
  1. How to clear browser cache in Chrome or Edge
  2. The federal T1 return is rejected by the CRA with error code 149-R.
  3. CRA FORMS: Can I transmit slips and T5013 returns using the federal transmitter number MM for 2023 and prior years?
  4. Forms - CRA Efile error - Account number given in the attached T619 electronic transmittal records does not match the account number you used to sign in
  5. How do I reset my password on the ''support.cch.com/oss/canada'' Support Platform?
  6. How do I register for the ''support.cch.com/oss/canada'' Support Platform?
  7. CCH iFirm Tax: How to send a return to Support
  8. T2 - How to get the schedule 130 for Excessive Interest and Financing Expenses Limitation applicable?
  9. The federal T1 return is rejected by the CRA with error code 43 in Taxprep or CCH iFirm Taxprep T1.
  10. CCH iFirm Taxprep T2 - 2025 v.1.0 - The GIFI import does not work, the .GFI extension is rejected
Date: 2024-Dec.-18
Cantax FormMaster
System Requirements

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

Processor

Dual Core processor (Quad Core processor is recommended)

Supported operating systems
  • Windows 10 (64-bit) Pro and Enterprise Editions*
  • Windows 11 (64-bit) Pro Edition*
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2022
  • Remote Desktop Services in Windows Server 2016, 2019 and 2022
  • Citrix Virtual Apps and Desktops 7 2308
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.
RAM

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 8.0 or higher is required.

Network File Systems
  • NTFS
  • FAT32
  • exFAT
Internet Connection