0x80070005 — Access denied
Windows or an installer could not access a required resource. The exact permission or component depends on the task.
Read the guide →Error-code library
Windows Error Codes & Stop Codes
Search the exact hexadecimal error or stop-code text. Codes narrow the search but rarely prove the cause on their own. Match the Windows version, operation and full message.
Before running a fix
Write down the full code and where it appeared. Do not download a “code fixer,” edit registry settings blindly or reset Windows before backing up files.
Code family
Windows Update & permissions
Code family
Windows Update & files
0x80070002 — The system cannot find the file specified
An operation could not find a file or path it expected. The cause depends on the update or application.
Read the guide →Code family
Windows Update & servicing
0x8007000d — Invalid data
An operation received data it could not use. In Windows Update this may be associated with update data or cache problems.
Read the guide →0x800f0922 — Update or servicing operation failed
This code can have different causes depending on the operation, including servicing or system-reserved partition conditions in some cases.
Read the guide →Code family
Windows Update
0x800705b4 — Operation timed out
A Windows operation exceeded its time limit. The cause may involve update progress, connectivity, storage or another component.
Read the guide →Code family
Windows servicing
0x800f081f — Source files could not be found
Windows could not find source files needed for a servicing or repair operation. The source depends on the feature being repaired.
Read the guide →Code family
Windows services & updates
0x80070422 — Required service may be disabled or stopped
This code often appears when an operation needs a Windows service that is disabled or unavailable.
Read the guide →Code family
Feature upgrades & drivers
0xC1900101 — Windows upgrade failure commonly associated with drivers
Microsoft associates this error family with driver-related Windows upgrade failures. The full suffix and setup logs can narrow the cause.
Read the guide →Code family
Windows configuration & updates
0x80070057 — Parameter or configuration value is invalid
The operation received an invalid parameter or value. The meaning depends on which Windows component returned the code.
Read the guide →Code family
Windows updates & resources
0x8007000e — Insufficient memory or resources
An operation could not obtain the resources it needed. This does not prove the PC needs a RAM upgrade.
Read the guide →Code family
Windows & applications
0x80004005 — Unspecified failure
A broad, nonspecific error code used by different Windows components and applications. The action and full message are essential.
Read the guide →Code family
Blue screen / stop code
MEMORY_MANAGEMENT — Windows stop code: MEMORY_MANAGEMENT
Windows detected a memory-management-related condition. Drivers, system files and hardware may be involved; the code alone does not prove bad RAM.
Read the guide →PAGE_FAULT_IN_NONPAGED_AREA — Windows stop code: PAGE_FAULT_IN_NONPAGED_AREA
Windows encountered an invalid memory access. Drivers, system files and hardware may require investigation.
Read the guide →SYSTEM_SERVICE_EXCEPTION — Windows stop code: SYSTEM_SERVICE_EXCEPTION
A system service or kernel transition encountered an exception. Driver/software interactions may be involved.
Read the guide →DRIVER_POWER_STATE_FAILURE — Windows stop code: DRIVER_POWER_STATE_FAILURE
A driver did not handle a power-state transition as expected. Sleep, wake, shutdown and new devices are useful clues.
Read the guide →DPC_WATCHDOG_VIOLATION — Windows stop code: DPC_WATCHDOG_VIOLATION
Windows detected a driver or interrupt-processing condition that exceeded expected limits. Storage and chipset drivers can be relevant.
Read the guide →Code family
Boot & recovery
INACCESSIBLE_BOOT_DEVICE — Windows stop code: INACCESSIBLE_BOOT_DEVICE
Windows cannot access the boot device during startup. Causes may involve boot configuration, storage access or a recent system change.
Read the guide →Code family
Hardware-related stop code
WHEA_UNCORRECTABLE_ERROR — Windows stop code: WHEA_UNCORRECTABLE_ERROR
Windows received a hardware error reported through WHEA. It may indicate hardware or firmware instability and requires careful diagnosis.
Read the guide →