Error code R:300 and R:301 occur when Shadow has attempted to start on a device that is incompatible with Shadow. When Error 300 or 301 occurs, the processor (CPU) or graphics card (GPU) may not meet Shadow's minimum requirements.

Solution

In some cases, shutting down Shadow will resolve the issue. To shut down Shadow, click the Help (?) button located in the Shadow launcher, then click Shut Down Shadow.

If Shadow does not start after shutting it down, try starting Shadow from a newer device. If Shadow starts, it's likely the older device does not meet our minimum requirements and cannot run Shadow.

To confirm your device meets our minimum requirements, choose your device's operating system below:

• Windows
• MacOS
• Android

If your hardware meets or exceeds our minimum requirements, send Diagnostic Logs to Shadow Support for assistance.