What Is

What Is Cidiag.exe & What Is It Used For?

This guide provides detailed information on the CIDiag.exe file and how to effectively make use of it


If you check your Windows device, you will discover various executable files, and knowing how to use them properly is essential. Our past articles discussed some of these processes, like Bioiso.exe and bcdboot.exe. This article, however, will talk about another critical process known as CIDiag.exe.

What is CIDiag.exe?

CIDiag.exe, part of the Code Integrity Diagnostic Tool, is a Windows file used to resolve problems with code integrity. The following are some of its functions.

  • Scans your device for files that have been tampered with.
  • Provides a report of the code integrity status of your PC.
  • Verifies a file’s signature to ensure it has not been tampered with.
  • Provides a list of all the code integrity policies currently enforced on your computer.

When should I use CIDiag.exe?

You should use CIDiag.exe when you encounter difficulties with Code Integrity. Code Integrity is a robust security measure within the Windows operating system, effectively shielding your computer against malicious software.

By promptly addressing any issues with Code Integrity, you fortify your defenses against potential malware attacks. Signs you might have a problem with Code Integrity include:

  • Inability to install or run certain applications.
  • Getting error messages about Code Integrity.
  • Your PC is not starting properly.

How do I use CIDiag.exe?

Use the command prompt

  1. Hold the Windows + R keys simultaneously, type cmd in the text field, then hit Ctrl + Shift + Enter to open the command prompt as an administrator.
  2. Once you are in the command prompt, paste the command below and hit Enter.
  3. This process will launch the Code Integrity Diagnostic Tool and display a list of all the Code Integrity policies currently running on your PC.
  4. The following are some of the options you can use with CIDiag.exe.
    /start – Starts the Code Integrity Diagnostic Tool.
    /stop – Stops the Code Integrity Diagnostic Tool.
    /nologs – Does not generate any logs.
    /output – Specifies the output file.
    /help – Displays help information.
  5. For instance, to run the Code Integrity Diagnostic tool and generate a log file, use the code below and hit Enter.
    CIDiag.exe /start /output c:\cidiag.log
  6. If you want to get more options to use with CIDiag.exe, run the code below.
    CIDiag.exe /help

This brings us to the end of this guide. We have comprehensively discussed what the CIDiag.exe file means and how to effectively use it in the command prompt.

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David Ogbor
David is a tech guru with extensive knowledge in technical articles. He is passionate about writing and presents technical articles in an easy-to-understand format for easy comprehension. He aims to present easy solutions for day-to-day problems encountered while using PC. In his spare time, he likes traveling, playing sports, and singing.