What does BSOD 266 (APP_TAGGING_INITIALIZATION_FAILED) mean?

 
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ConstantTypeOS
ERROR_CANNOT_COPYWin32 errorWindows
STATUS_RXACT_COMMITTEDNTSTATUSWindows
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CRITICAL_STRUCTURE_CORRUPTION DFSC_FILE_SYSTEM

APP_TAGGING_INITIALIZATION_FAILED

Application tagging initialization failure for APP_TAGGING_INITIALIZATION_FAILED

APP_TAGGING_INITIALIZATION_FAILED is bug check code 0x0000010A. This startup bug check points at OS infrastructure that tags or classifies applications for policy, compatibility, telemetry, or lifecycle decisions. It is not a normal application crash after the desktop is running.

How to read it in a dump for APP_TAGGING_INITIALIZATION_FAILED

  • Check the boot/session phase and any nested status code.
  • Policy, registry, package, or compatibility data can be more relevant than a foreground process.
  • The stack should decide which app-tagging component failed.

What to check for APP_TAGGING_INITIALIZATION_FAILED

  • Check recent OS updates, app-compatibility policy changes, and registry corruption.
  • Compare Safe Mode behavior if the system can boot.
  • Preserve event logs and dump data because the underlying status is the key clue.

References for APP_TAGGING_INITIALIZATION_FAILED

Dump evidence for APP_TAGGING_INITIALIZATION_FAILED

For APP_TAGGING_INITIALIZATION_FAILED, preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “APP_TAGGING_INITIALIZATION_FAILED”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.

Analysis order for APP_TAGGING_INITIALIZATION_FAILED

  • Run WinDbg !analyze -v, then inspect the documented meaning of each APP_TAGGING_INITIALIZATION_FAILED parameter instead of relying only on the probably-caused-by line.
  • For APP_TAGGING_INITIALIZATION_FAILED, find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with app / tagging / initialization.
  • For APP_TAGGING_INITIALIZATION_FAILED, keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.

Do not repeatedly reboot a machine affected by APP_TAGGING_INITIALIZATION_FAILED before collecting the dump and event logs. For APP_TAGGING_INITIALIZATION_FAILED, recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.

Dump evidence for APP_TAGGING_INITIALIZATION_FAILED

For APP_TAGGING_INITIALIZATION_FAILED, preserve the complete dump, the four bug-check parameters, the exact Windows build, loaded-module list, and the event timeline immediately before the stop. AllStat summarizes the condition as “APP_TAGGING_INITIALIZATION_FAILED”; that sentence identifies the failure class, while the parameters and stack determine which object, driver, processor, or subsystem instance was involved.

Analysis order for APP_TAGGING_INITIALIZATION_FAILED

  • Run WinDbg !analyze -v, then inspect the documented meaning of each APP_TAGGING_INITIALIZATION_FAILED parameter instead of relying only on the probably-caused-by line.
  • For APP_TAGGING_INITIALIZATION_FAILED, find the earliest abnormal event: driver update, firmware change, device reset, storage error, verifier report, resource exhaustion, or application hang connected with app / tagging / initialization.
  • For APP_TAGGING_INITIALIZATION_FAILED, keep third-party filter, security, storage, graphics, and virtualization drivers in the module inventory; removing evidence before dump analysis can obscure the responsible path.

Do not repeatedly reboot a machine affected by APP_TAGGING_INITIALIZATION_FAILED before collecting the dump and event logs. For APP_TAGGING_INITIALIZATION_FAILED, recovery actions should follow the component identified by the stack and parameters, not merely the symbolic stop-code name.


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