How to Fix ERROR_REQUEST_OUT_OF_SEQUENCE

The ERROR_REQUEST_OUT_OF_SEQUENCE error occurs when an operation is attempted in an incorrect sequence. Resolving this issue requires identifying the context of the error and correcting the sequence or dependencies of the operations.

The error can appear in many contexts such as when trying to access or modify a resource before opening, sending commands to a device without going through the initialization steps, starting a device or application that depends on other services that didn’t start. Also, developers may face this error when coding APIs or workflows that depend on proper sequencing. So, the process should start with identifying the source of the error.

How do I fix ERROR_REQUEST_OUT_OF_SEQUENCE?

1. Identify the source of the error

1. Note when the error occurs (e.g., during a specific application, driver, or system process).
2. Press Windows + S, type Event Viewer, and open it.
3. Navigate to Windows Logs > Application or System to find logs related to the error.
4. Look for error details to identify the problematic service or application.

2. Verify the dependencies

1. Open the Services Manager by pressing Win + R, typing services.msc and pressing Enter.
2. Locate the service or process causing the issue.
3. Ensure any dependent services are running. Right-click the service, select Properties, and check the Dependencies tab.
4. In database operation environments, ensure the required files or databases are accessible and not locked by another process.

3. Debug the application workflow

1. If the error occurs in a custom application:
   • Review the sequence of operations or API calls in the application’s workflow.
   • Ensure prerequisites (e.g., opening a resource, initializing a process) are completed before the operation.
2. Use debugging tools or logs to trace where the sequence breaks.

4. Resolve resource conflicts

1. Check for resource usage:
   • Use Task Manager (right click the Startbutton) or Process Explorer to see if the resource (e.g., file, port, or device) is already in use.
   • Close conflicting applications or processes.
2. Unlock resources:
   • If a resource is locked, release it by terminating the process using it or restarting the system.

5. Reconfigure the system or application

1. Reset application settings:
   • Open the application and reset its configuration to default settings.
2. Reinitialize the workflow:
   • Restart the application or reinitialize the process from the beginning to ensure the correct sequence is followed.

6. Contact support

If none of the above steps resolve the issue, contact the application or hardware vendor for technical support.

Make sure to provide details about the error, including the steps to reproduce it and any logs. All the data will make it easier to debug the problem.

Because the ERROR_REQUEST_OUT_OF_SEQUENCE can occur in many environments and situations, it’s hard to pinpoint exact solutions for each one. However, by following the guidelines, you can address the ERROR_REQUEST_OUT_OF_SEQUENCE issue and restore proper functionality.

Let us know in the comments below if you need further assistance.