For Rob Run PC crashes and connection failures, check server notices, restart Steam, update drivers, and verify files before trying symptom-specific fixes.
A crash to desktop, mouse-triggered stutter, and a lost server connection need different follow-up checks. Record any error code before changing settings, then follow the matching steps below. If loading stops at Compiling Shaders, check both the local installation and service notices, because a server connection problem can resemble a loading fault. Change one thing at a time so you can tell what helped.
Check server status and maintenance notices
Check Kefir's latest Rob Run announcements for maintenance or regional service problems before repairing your installation. Local file checks cannot restore an unavailable game server.
Loading failures on November 6, 2026, included screens stuck at 0% or 50%. Kefir also acknowledged technical problems affecting the EU server. A screen displaying Compiling Shaders therefore does not establish that your shader cache is the cause.
If a current notice affects your region, pause local troubleshooting until the service returns, then retry the game. If there is no matching notice, continue with the checks below without assuming the failure is definitely on your PC.
Check where loading stops
Verify game files and update graphics drivers
Run the basic checks
Use this sequence for loading failures or freezing before making more specific changes:
- Check ordinary connectivity. Open a few websites on the same PC and connection.
- Close Rob Run and restart Steam, then check for a game update.
- Update your graphics driver if it is out of date.
- In your Steam Library, right-click Rob Run and select Properties.
- Open Installed Files, then select Verify integrity of game files.
- Let the check finish before launching again.
Test after each change when practical. If restarting Steam resolves the failure, you do not need to continue through unrelated fixes.
File verification checks the installation for missing or damaged files. It is a sensible starting point for asset-loading problems, but it does not repair a server outage.
Compare your PC with the requirements
Both listed configurations require 64-bit Windows 10 or later, DirectX 11, an internet connection, and 20 GB of free storage.
| Component | Minimum | Recommended |
|---|---|---|
| CPU | Intel i5-6600K / Ryzen 5 1600 | Intel i5-9600K / Ryzen 5 3600 |
| Memory | 12 GB | 16 GB |
| GPU | GTX 1050 Ti / RX 580 / Arc A380 | RTX 2070 / RX 5700 XT / Arc B570 |
These configurations are not promised frame-rate targets. A PC meeting the recommended specification can still experience a network failure, while a disconnect code does not establish that your graphics card is too slow.
Troubleshoot startup crashes and shader freezes
If Rob Run closes or crashes
Kefir's crash instructions start with closing unused applications and restarting your PC. Do that before returning to the point where the crash occurred.
Record whether the game closes before the main menu, while joining a server, or during play. Keep the exact error text if a message appears. Those details are more useful for support than a report that only says the game does not work.
If the crash repeats after the basic checks, collect your PC specifications and the circumstances of the failure for a support report. Avoid making several unrelated changes between attempts, which makes the result harder to interpret.
If Compiling Shaders stays at 0% or 50%
A shader-cache reset is an optional local troubleshooting step, not a guaranteed fix. Try it once after checking service notices and verifying the installation:
- Close Rob Run completely.
- Press Windows + R, enter cleanmgr, and run it.
- Select your Windows drive if prompted.
- Select DirectX Shader Cache in the cleanup list. Leave unrelated cleanup categories unselected for this test.
- Select OK and confirm deletion.
- Restart your PC, then launch Rob Run again.
If the same loading freeze continues during an acknowledged server outage, stop repeating cache resets or reinstalls. Neither action repairs the affected service.
Select the shader cache only
Reduce stuttering and background interference
If moving the mouse triggers frame drops
For Rob Run, as with other action games, first check whether a hitch appears only when you move the mouse. Compare a moment without mouse input against the same activity while moving it.
If the symptom follows mouse movement, check the mouse's polling-rate setting first. Compare behavior before and after changing it, without adjusting other settings during that test. Treat the result as a check for your setup, not a universal performance preset.
A mouse-triggered hitch needs a different investigation from a server disconnect. Record whether the game remains connected and whether an error message appears, so those symptoms do not get mixed together.
If stuttering is not limited to mouse movement
Review active overlays and background applications next. Compare the same in-game activity with an overlay disabled, then restore it if there is no improvement before testing another change.
Keep a short record of each adjustment and its result. For example, note whether the hitch remains unchanged, becomes less frequent, or disappears. Repeatable behavior is more useful than a single smooth moment after changing several settings.
Use the graphics-driver check above if you have not already completed it. If the game keeps freezing or closing, continue with the crash and support steps instead of treating every interruption as a mouse problem.
Troubleshoot disconnects and error codes
Separate network trouble from authentication failures
An error during startup can involve downloads, authentication, or anti-cheat initialization. A disconnect after joining a server is a different symptom. Match the exact code before changing unrelated settings.
On a guest network, check whether a browser login page must be completed. If downloads are being blocked or altered, comparing the same launch on a home connection can help identify network filtering as a factor.
Use the table to choose your next action. Where it refers to verification, follow the Steam procedure above.
| Error code | What it identifies | Next action |
|---|---|---|
| E-0101 / E-0110 | Startup configuration cannot download | Check connectivity and network access. |
| E-0102 | Downloaded data is blocked or corrupted | Check guest-network login requirements and network filtering; try a home connection. |
| E-0124 | Asset-loading error | Use Steam file verification. |
| E-0201 | An established server connection was lost | Check the connection, then restart the game. |
| E-0301 / E-0302 | Outdated client | Restart Steam and install the game update. |
| E-0303 / E-0304 | Corrupt or mismatched data | Wait 10–15 minutes, disable the proxy if one is in use, then verify files and update. |
| E-0401 | Steam authentication failed | Check Steam's online mode and that you are using the intended account. |
| E-0403 / E-0404 | Epic Online Services authorization issue | Start with file verification. |
| E-0405 | Steam or a required library is blocked | Review security-software quarantine and launch through Steam. |
| E-0501 / E-0502 | Easy Anti-Cheat cannot run correctly | Launch through Steam and verify the game files. |
| E-0601 | Keyboard or mouse not detected | Connect a physical keyboard and mouse directly, then test outside a remote session. |
| E-0904 | Unexpected internal game error | Restart and retain the error text if it repeats. |
If the error keeps returning
Record whether it occurs before joining, immediately after joining, or partway through a session. Include the server or region involved and the approximate time.
For E-0601, also record the attached input devices and whether the launch was local, through Remote Desktop, or through cloud streaming. This is an input-detection issue, not a general graphics-performance diagnosis.
For authentication or Easy Anti-Cheat failures, preserve a screenshot of the full message. An error code and its accompanying text give support a more precise starting point than a screenshot of the desktop after the game closes.
Collect error details for a support report
Find your UID
If you can enter the game, press Esc. Your UID appears beneath your character name on the right. Select Copy UID to copy the identifier.
Include the details that narrow the failure
Send Kefir's Rob Run support team:
- Your UID and player name.
- The exact error code and message text, plus a screenshot when possible.
- Your PC specifications, including CPU, GPU, memory, and Windows version.
- The approximate time, server or region, and what you were doing.
- Whether the problem occurs during startup, shader loading, server joining, mouse movement, or ordinary play.
- The troubleshooting steps completed and what changed after each one.
If you use a different operating environment or a remote session, include that detail. Finish the report with the shortest sequence that reproduces the failure, such as launching through Steam, reaching the loading screen, and receiving the same code.
