Upgrading Internet Explorer will not effect your ability to print from other programs. You may be trying to print from the Easy-WebPrint plugin, which is included in IE. After upgrading to IE10, I recommend downloading and installing the updated version of the Easy-WebPrint plugin. The plugin can be downloaded here in the Software section of your printer's drivers page.
If this didn't work, or if you have any other questions, please feel free to Contact Us!
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM