0x000021B4
ERROR_DS_HIERARCHY_TABLE_TOO_DEEP
The address books are nested too deeply. Failed to build the hierarchy table.
win32decimal 8628
Matched as: the code as given (hex)
Log a case with no specific solution
Source: System Error Codes (8200-8999) - Win32 apps · CC BY 4.0 · wording unchanged, formatting adapted for this site · retrieved 2026-10-09