Error Code Portal
MicrosoftWindows WinHTTPError code

12037

ERROR_WINHTTP_SECURE_CERT_DATE_INVALID

Alternative forms: 0x00002F05 · 0x2F05 · ERROR_WINHTTP_SECURE_CERT_DATE_INVALID

What does this code mean?

Code 12037 · An issue reported by Windows WinHTTP.

Official explanation · Original text

Indicates that a required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file, or that the validity periods of the certification chain do not nest correctly (equivalent to a CERT_E_EXPIRED or a CERT_E_VALIDITYPERIODNESTING error).

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Error Messages (Winhttp.h) ↗

Creator: Microsoft and MicrosoftDocs contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted numeric codes, symbolic names and English message text; converted Markdown/HTML to plain text and normalized whitespace; added Korean product context, namespace labels, status classification and separately labeled official links. No machine translation of message text.

Source details · Original licenses and notices