There are two ways to do this, and both may prove necessary (i.e. Here is how to take control of Steam updates:Įnsure your Steam application is unable to 'phone home' via a network connection to automatically perform verification updates behind your back (intended to prevent cheating in multi-player games) that will overwrite part of the mod(s).

Simply disabling Windows User Account Control (UAC) or folder permissions is not sufficient. If you have mods that are not easily re-installed, it is advisable to have a complete backup of the game folder tree, so you can revert when a patch does get forced upon you.įirst, see Installing Games on Windows Vista+ for WHY and HOW TO move your Steam folder out of the Program Files folder tree if you haven't done so already.

The only reliable method to avoid unwanted or unexpected patches is to always run the game in Off-Line mode. Steam has demonstrated that they will ignore the disabled 'auto update' settings for a game without warning (at least sometimes) when the game vendor releases a patch. To prevent this from happening unexpectedly, you must assert control over when Steam performs such steps. This 'phoning home' occurs every time the game is launched, and is independent of patches. Steam's 'phone-home' capability has been known to override only some elements of a mod, producing mixed results for no apparent reason. As a consequence, every time a patch to the game is released, or Steam 'verifies' the game files, any such mods will be removed when the original (or 'vanilla') version of the files are restored, and eventually you will find it necessary to reapply many, if not all of your desired mods. Some mod changes have to be made by altering the hex code of the game executable file (.exe) directly, or by replacing original game files.

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