Install DC Diag Analyzer for offline use
1,247 diagnostics analyzed
Swiss IT Intelligence
DC Diag Analyzer
Back to site
All News Cybersecurity Tech News
Tutorials Fix Guides Knowledge Base Windows Events
Open Source Tools Downloads Log Analyzer DC Diag Analyzer Subnet Calculator VLAN Calculator Password Generator Bookmark Editor All Tools Directory
Register

DC Diag Analyzer

Upload your Active Directory diagnostic files for instant health analysis. All processing happens in your browser — no data sent to any server.

DCDiag Output
Upload dcdiag.txt output
.txt
Repadmin Summary
Upload repadmin /replsummary
.txt
GPResult Output
Upload gpresult /r output
.txt
How to generate the analysis files?
Run our PowerShell script on any Domain Controller to automatically generate all required files.
1
Download the script
Download Get-ADDiagnostics.ps1 and copy it to your Domain Controller.
2
Run as Administrator
Open PowerShell as Administrator on your Domain Controller and run:
Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
.\Get-ADDiagnostics.ps1
3
Upload the generated files
The script creates a folder C:\ADDiag\<date>\ with 3 files. Upload them above:
  • dcdiag.txt → DCDiag drop zone
  • repadmin_replsummary.txt → Repadmin drop zone
  • gpresult.txt → GPResult drop zone
Requirements: Must be run on a Domain Controller • Requires Administrator privileges • Windows Server 2016, 2019, 2022

Your data stays on your computer. No file is sent to any server.

100% local processing — no data leaves your browser

Supports dcdiag, repadmin /replsummary and gpresult /r

Analyzing...

0%

AD Health Score
A
98/100
Replication
—
GPO Compliance
—
Critical Errors
—

Replication Status

DC Name Source DC Last Success Lag Failures Status

Group Policy Status

GPO Name Type Applied Details

DCDiag Test Results

Recommended PowerShell Fixes

Need help with your Active Directory? Our experts are available.

Contact support

Discover our other tools

Free browser-based IT tools — no registration required.

Log Analyzer

Analyze Windows Event Viewer CSV exports and get instant fix recommendations.

Subnet Calculator

Calculate IPv4/IPv6 network ranges, host counts, broadcast addresses and more.

VLAN Calculator

Plan and calculate VLAN segments, IP ranges and network topology for your infrastructure.

Password Generator

Generate strong, secure passwords with custom rules. 100% client-side, nothing sent to servers.

Rack Designer

Design and visualize your server rack layout with drag-and-drop. Export as PNG.