ERROR_BOOT_ALREADY_ACCEPTED - 1076 (0x434)
The current boot has already been accepted for use as the last-known-good control set.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_BOOT_ALREADY_ACCEPTED (1076, 0x434) indicates that the current boot configuration has already been accepted as the last-known-good control set. This means that the system has recognized and applied a specific boot configuration, which cannot be changed or overridden by subsequent operations.
Error Details
This error typically occurs during the boot process when attempting to change or modify an existing boot configuration. The system maintains a record of the last known good boot settings, and once these are accepted, any attempt to alter them will result in this error code being returned.
Usage Context
The ERROR_BOOT_ALREADY_ACCEPTED error is relevant primarily during scenarios where the boot configuration needs to be modified or restored. This can occur due to system updates, driver installations, or other administrative actions that require changes to the boot process.
Developer Interpretation
Developers should interpret this error as an indication that the current boot configuration has been finalized and cannot be altered without first reverting to a previous state or performing a clean boot. This error is often encountered when attempting to change boot options, such as device drivers or startup applications, after they have already been accepted.
Related Errors
ERROR_LAST_KNOWN_GOOD_BOOT(1075, 0x433): Indicates that the last known good boot configuration has not yet been applied.ERROR_NO_MORE_BOOT_LOGONS(268, 0x10C): Suggests that no more logons are available for the current session, which might be related to boot configuration issues.
FAQ
Q: What does ERROR_BOOT_ALREADY_ACCEPTED mean?
A: It means the current boot configuration has been accepted and cannot be changed. This error typically occurs when attempting to modify an existing boot setting that has already been finalized.
Q: How can I resolve this issue?
A: To resolve this, you may need to revert to a previous known good configuration or perform a clean boot by disabling unnecessary startup items and drivers.
Summary
The ERROR_BOOT_ALREADY_ACCEPTED error code signifies that the current boot configuration has been accepted as the last-known-good state. This error is specific to scenarios where modifications to the boot process are attempted after they have already been finalized, indicating that further changes cannot be made without reverting or performing a clean boot.