Update README with Get-UserLastLogonComputer documentation

README.md

@@ -1,43 +1,72 @@
 # AD-ComputerLastLogon
 
-PowerShell script to check when a computer last authenticated to the Active Directory domain.
+PowerShell scripts for Active Directory logon auditing.
+
+## Scripts
+
+| Script | Description |
+|--------|-------------|
+| `Get-ComputerLastLogon.ps1` | Check when a specific computer last authenticated to the domain |
+| `Get-UserLastLogonComputer.ps1` | Export all users and the last PC they logged into (CSV) |
 
 ## Requirements
 
 - Windows PowerShell 5.1 or PowerShell 7+
 - Active Directory PowerShell module (RSAT)
-- Run on a Domain Controller or machine with AD connectivity
+- Run on a Domain Controller
+- Administrator permissions (for Security log access)
 
-## Usage
+---
 
-### Interactive Mode
+## Get-ComputerLastLogon.ps1
-```powershell
-.\Get-ComputerLastLogon.ps1
-# You will be prompted to enter a computer name
-```
 
-### With Parameter
+Queries AD for a computer's last authentication time.
+
+### Usage
 ```powershell
 .\Get-ComputerLastLogon.ps1 -ComputerName "WORKSTATION01"
+
+# Or interactive:
+.\Get-ComputerLastLogon.ps1
 ```
 
-## Output
+### Output Fields
-
-The script displays:
-
 | Field | Description |
 |-------|-------------|
-| **Last Logon (Replicated)** | `LastLogonTimestamp` - replicated across DCs, updated ~every 14 days |
+| Last Logon (Replicated) | `LastLogonTimestamp` - replicated across DCs (~14 day update interval) |
-| **Last Logon (This DC)** | `LastLogon` - specific to the DC you're querying, not replicated |
+| Last Logon (This DC) | `LastLogon` - DC-specific, not replicated |
-| **Days Since Last Logon** | Calculated from the replicated timestamp |
+| Days Since Last Logon | Calculated from replicated timestamp |
-| **Account Enabled** | Whether the computer account is enabled |
-| **Operating System** | OS name and version |
-| **Created** | When the computer account was created |
-| **Description** | AD description field |
-| **DN** | Distinguished Name (full AD path) |
 
-## Notes
+---
 
-- **LastLogonTimestamp** is the more reliable field for determining if a computer is active, as it's replicated between all DCs
+## Get-UserLastLogonComputer.ps1
-- **LastLogon** only reflects activity on the specific DC you're querying
+
-- The replicated timestamp is only updated approximately every 14 days to reduce replication traffic
+Queries DC security event logs to find which PC each user last logged into, exports to CSV.
+
+### Usage
+```powershell
+# Default: last 7 days, saves to current directory
+.\Get-UserLastLogonComputer.ps1
+
+# Custom: last 30 days, specific output path
+.\Get-UserLastLogonComputer.ps1 -OutputPath "C:\Reports" -DaysBack 30
+```
+
+### Parameters
+| Parameter | Default | Description |
+|-----------|---------|-------------|
+| `-OutputPath` | Current directory | Where to save the CSV |
+| `-DaysBack` | 7 | Days of event logs to search |
+| `-LogonTypes` | 2, 10, 11 | Logon types to include |
+
+### Logon Types
+- **2** - Interactive (console login)
+- **10** - RemoteInteractive (RDP)
+- **11** - CachedInteractive (cached credentials)
+
+### CSV Output
+```
+Domain,Username,Computer,LogonTime,LogonType
+DOMAIN,jsmith,PC-OFFICE01,2026-01-19 10:30:00,Interactive
+DOMAIN,auser,PC-RECEPTION,2026-01-18 14:22:15,RDP
+```