Cygcrypto11dll 2021 ((exclusive)) May 2026

Feature: "cygcrypto11.dll 2021"

Overview

cygcrypto11.dll is a Windows DLL that provides OpenSSL's libcrypto functionality built for Cygwin or similar POSIX-on-Windows environments. In 2021 it appeared across a range of contexts: legacy builds, third‑party bundled OpenSSL libraries, malware analysis reports, and troubleshooting threads where missing or mismatched cygcrypto DLLs caused application failures.

If you use applications that require secure connections (such as curl, git, ssh, or various networking tools) that were compiled using Cygwin, they will rely on this file to function. The 1.1 in the name indicates it belongs to OpenSSL version 1.1.x, commonly used in development builds around 2021–2022. Causes of the "cygcrypto-1.1.dll Not Found" Error cygcrypto11dll 2021

Additional Resources:

Compiling software with g++ 11.2 (released in 2021) sometimes led to ldd (list dynamic dependencies) failing to find the library. Feature: "cygcrypto11