HKEY_CLASSES_ROOT
E193809
HKEY_CLASSES_ROOT is a primary Windows Registry hive that stores information about file associations, COM objects, and class registrations used by the operating system and applications.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HKEY_CLASSES_ROOT canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1718954 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: HKEY_CLASSES_ROOT Context triple: [Registry Editor, topLevelHive, HKEY_CLASSES_ROOT]
-
A.
Registry Editor
Registry Editor is a built-in Windows utility that allows users to view and modify the system’s hierarchical configuration database known as the Windows Registry.
-
B.
Windows Shell
Windows Shell is the graphical user interface and command environment of the Microsoft Windows operating system, providing the desktop, taskbar, file explorer, and related user interaction features.
-
C.
KMS
KMS is the Dutch abbreviation for the Royal Military Academy in Belgium, the institution responsible for training officers for the Belgian Armed Forces.
-
D.
Windows 9x
Windows 9x is a family of consumer-oriented Microsoft operating systems based on the Windows 95 codebase, designed for home and small office PCs in the mid-to-late 1990s.
-
E.
WSH
WSH is the stock ticker symbol for Willis Group Holdings, a global insurance brokerage and risk management firm.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: HKEY_CLASSES_ROOT Target entity description: HKEY_CLASSES_ROOT is a primary Windows Registry hive that stores information about file associations, COM objects, and class registrations used by the operating system and applications.
-
A.
Registry Editor
Registry Editor is a built-in Windows utility that allows users to view and modify the system’s hierarchical configuration database known as the Windows Registry.
-
B.
Windows Shell
Windows Shell is the graphical user interface and command environment of the Microsoft Windows operating system, providing the desktop, taskbar, file explorer, and related user interaction features.
-
C.
KMS
KMS is the Dutch abbreviation for the Royal Military Academy in Belgium, the institution responsible for training officers for the Belgian Armed Forces.
-
D.
Windows 9x
Windows 9x is a family of consumer-oriented Microsoft operating systems based on the Windows 95 codebase, designed for home and small office PCs in the mid-to-late 1990s.
-
E.
WSH
WSH is the stock ticker symbol for Willis Group Holdings, a global insurance brokerage and risk management firm.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Windows registry hive
ⓘ
registry root key ⓘ |
| abbreviation | HKCR ⓘ |
| affects |
how URLs are handled
ⓘ
how files are opened ⓘ how icons are displayed for file types ⓘ |
| aliasOf | HKEY_LOCAL_MACHINE\Software\Classes ⓘ |
| containsSubkeysOfType |
AppID keys
ⓘ
CLSID keys ⓘ Interface keys ⓘ MIME type keys ⓘ ProgID keys ⓘ TypeLib keys ⓘ file extension keys ⓘ protocol keys ⓘ |
| controls |
COM class activation
ⓘ
DDE settings for file types ⓘ context menu entries for file types ⓘ default application for file extension ⓘ shell verbs for file types ⓘ |
| dataType | registry keys and values ⓘ |
| introducedIn | early versions of Microsoft Windows NT family ⓘ |
| isReadOnlyViewFor | HKEY_LOCAL_MACHINE\Software\Classes on modern Windows versions ⓘ |
| logicalPath | HKEY_CLASSES_ROOT ⓘ |
| mergedWith | HKEY_CURRENT_USER\Software\Classes ⓘ |
| operatingSystem |
Windows
ⓘ
surface form:
Microsoft Windows
|
| partOf | Windows Registry ⓘ |
| scope | system-wide ⓘ |
| securityContext | requires administrative privileges for many modifications ⓘ |
| storesInformationAbout |
CLSID mappings
ⓘ
COM objects ⓘ OLE information ⓘ ProgID mappings ⓘ URL protocol handlers ⓘ class registrations ⓘ context menu handlers ⓘ drag-and-drop handlers ⓘ file associations ⓘ file type handlers ⓘ icon handlers ⓘ interface identifiers ⓘ preview handlers ⓘ shell extensions ⓘ type libraries ⓘ |
| usedBy |
COM subsystem
ⓘ
File Explorer ⓘ
surface form:
Windows Explorer
Windows shell ⓘ applications ⓘ |
| usedFor | backward compatibility with older Windows applications ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: HKEY_CLASSES_ROOT Description of subject: HKEY_CLASSES_ROOT is a primary Windows Registry hive that stores information about file associations, COM objects, and class registrations used by the operating system and applications.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.