To make sure you can file your return securely and confidentially, you must use a Web browser that supports the Transport Layer Security (TLS) protocol. If you don't have a browser that meets the security standard, you can either download a complete browser package or upgrade the one you have. The CRA encourages you to upgrade to TLS 1.2 so that your system is as secure as possible.
What if I do not upgrade my browser?
If your browser does not meet the requirements listed above, you may not be able to use GST/HST NETFILE or GST/HST Internet File Transfer.
The Canada Revenue Agency is not responsible for any difficulties or problems in downloading and installing software. Technical support is provided by the software suppliers.
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