Transport Fever 3 Not Launching: Startup Troubleshooting

Separate a launch that never opens a window from one that reaches a black screen, plays a train sound, and then displays an error. Players have reported both patterns. Another report describes the game appearing for one or two seconds before closing itself; others see Steam return to its green Play button without getting into the game.

Write down the exact error if one appears. “An error just occurred” and “load library error 126” are different reported messages, and the successful workaround below belongs to the internal-error case. The error-126 report has no confirmed resolution. Matching only the fact that the game closes would erase this useful distinction.

Restarting Steam and restarting the computer after installation were suggested by players as initial checks. Neither suggestion has a confirmed success in those particular reports. You can try them once, but if startup still fails, continue to the hardware check rather than assuming repeated restarts will resolve it.

Open Steam → Help → System Information and find the processor information. Read the AVX2 entry specifically. One posted report showed AVX: Supported alongside AVX2: Unsupported on an Intel Core i7-2700K. The game failed to boot even though the same computer had an RTX 3060 and roughly 16 GB of RAM. That combination illustrates why checking only the graphics card misses an explicit CPU requirement.

Several players with older processors reported the same problem: i7-2700K, i7-3770, and i5-3470 owners described launch failures, while a laptop report listed an i7-3612QM or i7-3632QM and received the same AVX2 compatibility explanation. A German report showed a Xeon E5-1620 with AVX supported and AVX2 unsupported. These are reported examples, not a complete compatibility list; use your own system information rather than relying on the processor's i5, i7, or Xeon label.

If your report says AVX2: Unsupported, the computer does not meet the listed Windows or Linux CPU requirement. A software workaround that removes that requirement is not confirmed yet. Some affected players reported requesting refunds, but there is no confirmed promise that an upcoming patch will make those CPUs compatible.

If it says AVX2: Supported, continue. Another failed-launch report showed a Ryzen 7 9700X with AVX2 supported, and an internal-error report showed an i7-8700 with AVX2 supported. Missing AVX2 therefore does not explain every startup failure.

Check the operating system, RAM, graphics hardware, available storage, and drive type as well as the CPU instruction support. Windows minimum specifications list Windows 10 64-bit or Windows 11, an Intel Core i5-8400 or AMD Ryzen 5 2600X, 8 GB RAM, and a GTX 1060, RX 480, or Arc A380 with 4 GB VRAM. Storage is 90 GB of available space, and an SSD is required.

Linux minimum specifications list Ubuntu 24.04 or higher, with the same minimum processor, RAM, graphics, and storage targets. On macOS, the listed minimum is macOS Sequoia 15.7 or higher, an Apple M2 Pro, and 16 GB RAM. The Mac specification explicitly says Apple Silicon Only and requires an Apple processor; it also lists 90 GB available space and an SSD.

Use the system requirements comparison for the complete platform specifications. Falling below a requirement is a compatibility concern, but the precise reason for an individual crash is not confirmed yet merely because one specification differs. Conversely, meeting the specifications does not identify which software component caused a startup internal error.

A player described clicking Play, hearing the train, seeing a black screen, and receiving “An error just occurred.” They had previously addressed a Transport Fever 2 problem by changing Settings.lua from Vulkan to OpenGL, but reported that this did not resolve the Transport Fever 3 startup failure.

The player later reported success after removing C:\ProgramData\ReShade. They said ReShade had been uninstalled years earlier, but the folder still existed. If you use or previously used ReShade, check for that leftover folder rather than assuming an old uninstall removed everything. Uninstall ReShade if it is still installed; preserve a backup of any files you intend to remove before testing the reported cleanup.

This is a player-confirmed result for one startup case. It is not an official instruction to delete unrelated folders, and it does not establish that every black screen is caused by ReShade. If the folder is absent, this particular leftover-folder explanation does not match your setup.

The same player also advised turning off OBS, the Steam Overlay, and the Rockstar Social Club launcher. Their listed Vulkan layers included OBS, Steam overlay, Steam fossilize, and Rockstar Social Club entries. If those programs are running on your computer, close them or disable the relevant overlay for a startup test.

The explicit success report was attached to removing the ReShade folder. The separate contribution of each overlay change is not confirmed yet, so treat this as a conditional troubleshooting test. A listed layer is a clue about software interacting with the game, not proof that the named program always prevents Transport Fever 3 from launching.

Avoid disabling an integrated graphics device as a blanket solution. One player with an AVX2-capable Ryzen system reported that doing so got the game running, but it was not rendering. That result did not establish a working launch into playable graphics.

For the internal-error case, players included the last lines of stdout.txt. Those excerpts recorded a minidump, the generic error box, and, in one case, a possible hang. Another excerpt showed content-cache reads immediately before the crash. Those lines record where startup ended; they do not by themselves prove that campaign content or a particular mod caused the failure.

Keep the exact message, your processor's AVX2 entry, operating system, GPU, and any relevant final log lines together. A generic report that the game will not open cannot distinguish the unsupported-CPU cases from the AVX2-capable internal-error cases. If you get error 126, preserve that wording instead of relabeling it as the solved ReShade error. Its cause and a verified repair are not confirmed yet.