SI have released the 17.3 patch for FM17 thus making the current FMRTE version incompatible with the game for those who didn't follow the tips in the forum rules:
Steam (top left) > Go Offline > Restart in Offline Mode
Besides the above method to stop FM from updating, there is another method that you can do. Backup the following folder (x = yearly release i.e. 2016, 2017, etc) to another location, however make sure you have enough disk space as this file can be large.
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