Windows guides
Windows error codes — update and upgrade failures, servicing corruption, and the numbers Windows shows instead of an explanation.
5 guides
Windows error 0x80070643
Fix Windows install error 0x80070643: a failing recovery environment update means the recovery partition lacks the 250 MB Microsoft requires, while any other update points at component-store corruption instead.
Windows error 0xC1900101
Fix a Windows upgrade that rolls back with 0xC1900101: Microsoft calls it a generic rollback code, and the extend code beside it — 0x20017, 0x30018, 0x40017 — names the phase that failed and the fix.
Windows error 0x800F081F
Fix 0x800F081F, CBS_E_SOURCE_MISSING: Windows knows which files it needs and cannot reach them. Covers enabling .NET Framework 3.5 from installation media and DISM repairs that end with the same code.
Windows error 0x80073712
Fix 0x80073712, ERROR_SXS_COMPONENT_STORE_CORRUPT: the component store Windows installs updates from is inconsistent, so retrying cannot work. Covers why DISM has to run before SFC, and reading CBS.log when it does not stick.
Windows error 0x80070422
0x80070422 is ERROR_SERVICE_DISABLED: the service cannot start because it is disabled. Nothing is corrupt — Windows Update has been switched off, usually by a policy, a tune-up tool or a deliberate change.