RegistryExpert

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A lightweight tool to view, search and analyze registry hives

RegistryExpert 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# Registry Expert

Offline Windows registry hive viewer and analyzer for Azure VM support engineers.

![Version](https://img.shields.io/badge/version-3.0.1-brightgreen) ![.NET](https://img.shields.io/badge/.NET-8.0-blue) ![Windows](https://img.shields.io/badge/platform-Windows%20x64-lightgrey) ![License](https://img.shields.io/badge/license-MIT-green)

## Download

**[Download Latest Release](../../releases/latest)** — current version **3.0.1**

| | |
|---|---|
| **`RegistryExpert-Setup-vx.x.x.msi`** | Recommended. Installs the app, registers hive file associations, and enables in-app updates. |
| **`RegistryExpert.exe`** | Portable single file — no installation required. Download and run. |

Both are signed by Microsoft Corporation.

## Features

### Browse Offline Hives

Open and browse registry hive files extracted from offline VMs. Supports SYSTEM, SOFTWARE, SAM, SECURITY, NTUSER.DAT, USRCLASS.DAT, DEFAULT, Amcache.hve, and BCD. Drag-and-drop a hive file onto the window or use File > Open.

### Search

Full-text search across key paths, key names, value names, and value data. Results show matching keys and values with highlighted preview. Double-click any result to navigate directly to that key in the tree.

### Analyze

One-click deep analysis of the loaded hive, organized into categories based on hive type:

| Category | Hive | What It Extracts |
|----------|------|------------------|
| **System** | SYSTEM, SOFTWARE | Computer name, OS build (with Win11 detection), timezone, last shutdown, crash dump config, time sync (NTP/w32time), CPU hyper-threading settings |
| **Guest Agent** | SYSTEM, SOFTWARE | Azure Guest Agent version, RdAgent version, VM ID, installed Azure extensions with state |
| **Profiles** | SAM, SOFTWARE, NTUSER.DAT | Local user accounts, user profiles with last logon times, recent documents, typed paths, run history, program usage (UserAssist) |
| **Services** | SYSTEM | Full service list filterable by start type (Boot, System, Auto, Manual, Disabled, Delayed Auto-Start) with image paths |
| **Software** | SOFTWARE, NTUSER.DAT | Installed programs (64-bit and 32-bit), startup programs (Run/RunOnce), Appx packages (inbox vs. user-installed) |
| **Storage** | SYSTEM | Disk filters and volume filters |
| **Network** | SYSTEM, SOFTWARE | Network adapters (IP, DNS, DHCP, gateway, driver version, stale/ghosted NIC detection), DNS registered adapters, network profiles, wireless SSIDs, network shares, firewall rules by profile (Domain/Private/Public) with color-coded block rules, TLS/SSL protocol status (SSL 2.0 through TLS 1.3) |
| **RDP** | SYSTEM | RDP configuration (port, NLA, encryption, security layer), session limits, Citrix detection, RDP licensing, RDS license servers, grace period |
| **Update** | SOFTWARE | Windows Update settings |

Results are sortable by column.

### Insights

Rule-based findings surfaced from the loaded hives, including ghosted network adapters left behind when a NIC is replaced.

### Statistics

Dashboard showing hive file size, total keys, total values, and hive type. Includes two tabs for **Key Counts (Bloat Detection)** and **Data Sizes** with expandable tree views and bar charts to identify registry bloat.

### Timeline

Scans all registry keys by last-modified timestamp. Filter by time range (last hour, 24 hours, 7 days, 30 days, or custom range) and sort by date. Useful for identifying what changed during an incident window. Export results to CSV.

### Compare

Side-by-side comparison of two registry hives of the same type. Color-coded diff view: green highlights keys unique to one hive, red highlights keys with changed values. Synchronized tree navigation between left and right panes.

### Additional

- **Export Key** — Export any selected key and all its subkeys to a text file
- **Value Inspector** — Double-click any value to see interpreted data and raw hex dump
- **Dark / Light Theme** — Switch via View menu; preference is remembered
- **Accessibility** — Screen reader and keyboard navigation support across all windows
- **High DPI Support** — Scales correctly on 125%, 150%, 200% displays and across monitors
- **Auto-Update Check** — Checks GitHub releases for new versions on startup

## Usage

1. **Open a hive** — Drag-and-drop a hive file onto the window, or use **File > Open Hive** (Ctrl+O). The tree view populates with the registry key hierarchy and the right panel shows values for the selected key.

2. **Browse** — Expand keys in the tree. Click a value to see its type, data, and hex dump in the details pane. Right-click to copy key paths or value data.

3. **Search** — Press **Ctrl+F** to open Search. Type a term and results appear across all keys, names, and data. Double-click a result to jump to it in the main tree.

4. **Analyze** — Press **F5** to run analysis. Select a category on the left (System, Network, Services, etc.) and browse the extracted information. Click any row to see the raw registry path and value in the detail pane.

5. **Timeline** — Press **Ctrl+T** to scan modification timestamps. Set a time filter to narrow down changes to an incident window. Export to CSV for further analysis.

6. **Compare** — Press **Ctrl+M** to compare two hives. Load a second hive of the same type and run the diff. Green nodes are unique to one side; red nodes have value differences.

7. **Statistics** — Press **Ctrl+I** to see key counts and data sizes. Use the bloat detection tab to find keys with excessive subkeys or large data.

## Privacy

Registry Expert sends anonymous usage telemetry: a per-install identifier, the app version, and which features are opened. It never transmits registry keys or values, hive or file paths, search terms, user names, or machine names. Turn it off any time under **Help > About**.

## Source

Development happens in an internal Microsoft repository. This repository hosts releases; source for version 2.3.0 and earlier remains browsable under the [tags](../../tags).

## License

Licensed under the MIT license.

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