- 4 minutes to read

Configure Windows FIPS Mode for Nodinite

The Windows FIPS Mode Compatibility Challenge

Many government, healthcare, and defense organizations enforce Windows FIPS mode, a Group Policy setting that restricts cryptographic algorithms to those validated under FIPS 140-2. It is meant to support compliance, but it changes which cryptography applications may use.

What Happens When Windows FIPS Mode Is Enabled

  • Blocks newer algorithms - Applications can't use cryptographic schemes that aren't FIPS-validated, even when they are stronger
  • Application start failures - IIS and .NET applications that rely on non-FIPS-approved crypto providers fail to start
  • ProductKey encryption failures - Very old Nodinite versions (before 4.4.0.34) used encryption algorithms that FIPS mode blocks, so license validation failed
  • False security assumptions - Microsoft and security experts argue FIPS mode doesn't by itself improve security

Important

This page covers the Windows FIPS mode setting only. For Nodinite's binary security and code signing with FIPS 140-2 Level 2 certificates, see Code Signing and Binary Integrity.

Understanding Windows FIPS Mode

Windows FIPS mode is a local security policy that enforces FIPS 140-2 validated cryptographic algorithms. When it is enabled, Windows blocks applications from using non-validated encryption, even if those algorithms are more secure.

flowchart LR APP["fa:fa-globe Nodinite web site
for example the Web Client"] POL{"fa:fa-shield-halved Windows FIPS mode
enabled?"} OK["fa:fa-check Any algorithm
the application selects"] FIPS["fa:fa-check FIPS-validated algorithms only"] FAIL["fa:fa-xmark Non-validated algorithm
cryptographic exception"] APP --> POL POL -->|"No"| OK POL -->|"Yes, validated algorithm"| FIPS POL -->|"Yes, non-validated algorithm"| FAIL style OK fill:#93d16d style FIPS fill:#93d16d style FAIL fill:#c33d34,color:#fff style POL fill:#FFD525

Diagram: with Windows FIPS mode enabled, an application such as the Web Client may only use FIPS-validated algorithms (green); a non-validated algorithm throws a cryptographic exception (red). Nodinite encrypts the ProductKey with FIPS-compatible algorithms.

Microsoft's Position on FIPS Mode

"FIPS mode" does not make Windows more secure. It blocks access to newer cryptography schemes that are not FIPS-validated, which can make your system slower, less functional, and arguably less secure.

Source: Why You Shouldn't Enable FIPS-Compliant Encryption on Windows

Key Points

  • ✅ FIPS mode is a compliance requirement, not a security improvement
  • ✅ Newer cryptographic algorithms are often more secure than FIPS-validated legacy ones
  • ✅ FIPS validation is expensive and time-consuming, so newer algorithms lag behind
  • ⚠️ Many organizations enforce FIPS mode due to regulatory mandates (NIST, DoD, FedRAMP)

Nodinite Version Compatibility

The Nodinite ProductKey is encrypted and decrypted for validation at runtime. Version 4.4.0.34 introduced FIPS-compatible encryption algorithms, so every supported Nodinite version, including v7, works with Windows FIPS mode enabled.

  • ✅ Windows FIPS mode can be enabled on the Windows Server(s) that run the Nodinite Core Services in IIS
  • ✅ ProductKey validation works with FIPS mode enabled
  • ✅ Supported in government and regulated environments that require FIPS compliance

Tip

Even though Nodinite supports FIPS mode, Microsoft recommends not enabling it unless your organization's policy requires it.

How to Disable FIPS Mode

If your policy allows it and you want to turn FIPS mode off:

  1. Open Local Security Policy (secpol.msc)
  2. Navigate to Local Policies > Security Options
  3. Find System cryptography: Use FIPS compliant algorithms for encryption, hashing, and signing
  4. Set it to Disabled
  5. Restart the server

A Group Policy from the domain overrides the local setting; ask your Active Directory team if the value reverts.

How to Check Your Nodinite Version

The current version is shown at the bottom left of the Web Client; see What version of Nodinite am I using?. Any Nodinite v7 version supports Windows FIPS mode.

Troubleshooting FIPS Mode Issues

Symptom: ProductKey Validation Fails

Error Messages

  • "This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms"
  • "Cryptographic exception during license validation"

Resolution

  • Check the version. A version older than 4.4.0.34 doesn't support FIPS mode and isn't supported; update to the latest v7 release.
  • On v7, collect the error from the diagnostics files and contact our support.

Symptom: Web Client Won't Start After Enabling FIPS Mode

Resolution Steps

  1. Confirm the version as described above.
  2. Restart IIS: iisreset /restart.
  3. If the error remains, disable FIPS mode temporarily to confirm it is the cause, then contact our support with the error.

Contact our support

If you have questions or trouble with the Nodinite Web Client, read more on the Support page.

Next Steps