MOSETUP_E_INSTALLDISKSPACE_BLOCK

The computer doesn't have enough free space to install

Matched as: the code as given (hex)

HRESULT breakdown: code: 526, customer: False, facility: 400, severity: failure (bit 31 set), ntstatus_wrapped: False

Source: Windows upgrade error codes · CC BY 4.0 · wording unchanged, formatting adapted for this site · retrieved 2026-10-09