MO-210 deep review — September 28, 2026

The entire Excel Associate guide was read against all 65 tasks in five PDF groups:20/19/8/10/8. The PDF linked by the official credential has a misleading security-analyst filename; its actual title and contents are MO-210. The receipt records its byte hash and per-task mapping. The five-domain automatic page snapshot and status remain unchanged.

The main correction is syllabus accuracy: required generation and dynamic-array functions were missing while conditional aggregates were described as part of the published associate scope. The guide now teaches the named functions and marks IFS, SUMIFS/COUNTIFS, date/time functions, validation, Flash Fill and duplicate removal as supplementary where they are not separately named in this PDF.

Six original examples, ten proposed desktop labs and 32 answered checks cover mixed references, overlapping blank/nonempty counts, deterministic sequences, distinct versus exactly-once values, textual identifiers and filtered totals. 20 local Python/Decimal assertions passed for their expected counts, arithmetic, ordering, sets and strings. This is independent calculation checking, not execution of Excel formulas or a workbook engine.

Source and article decisions

Primary Microsoft references were read for the named functions, spill behavior, typed imports, comments/notes and table totals. The guide separates table data from spill output, zero from empty text, a returned sorted array from source mutation, and totals of visible records from all stored records. Current credential information lists 50 minutes, 15 languages, a 150-hour recommendation, no dedicated Learn collection and a 60-month renewal label. No retirement notice was found; current MOS expiry is separately explained.

Chirag Fifadra's data-conversion article, originally published October 19, 2023, was read in full from the public embedded article body. It is retained with its Windows/Mac build and macro-execution limits, corroborated by current Support guidance. It is historical workflow context, not a new exam requirement or a guarantee for all import paths. Media was not viewed.

The help directory was inspected without claiming all linked training was reviewed. No commercial course, paid assessment or provider runtime was evaluated. Study durations are author suggestions. No desktop application or live exam environment was executed; independent human review remains pending. The receipt records repository, catalog, unit and strict generated-site results after passing.