pgAdmin 4启动报错：导入_greenlet时DLL加载失败求助

API 探路者

2026-7-7

PostgreSQL 16 + pgAdmin 4 Windows环境启动失败（_greenlet DLL加载错误）

我之前只用过MongoDB这类NoSQL数据库，近期为新项目开始接触PostgreSQL。从官网下载Windows版安装包后，pgAdmin 4 GUI使用完全正常，能创建表、测试查询等操作。

直到某天，pgAdmin突然反复要求输入密码，提示会话过期。我尝试卸载重装来清理损坏文件，结果问题反而更严重：重装后启动pgAdmin 4，长时间加载后弹出如下错误：

pgAdmin Runtime Environment
--------------------------------------------------------
Python Path: "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\python.exe"
Runtime Config File: "C:\Users\franc\AppData\Roaming\pgadmin\runtime_config.json"
pgAdmin Config File: "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\config.py"
Webapp Path: "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgAdmin4.py"
pgAdmin Command: "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\python.exe -s C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgAdmin4.py"
Environment: 
  - ALLUSERSPROFILE: C:\ProgramData
  - APPDATA: C:\Users\franc\AppData\Roaming
  - CHROME_CRASHPAD_PIPE_NAME: \\.\pipe\crashpad_7644_DRSMLIYWYIBRTUGW
  - CHROME_RESTART: NW.js|Spiacenti, si è verificato un arresto anomalo di NW.js. Riavviarlo ora?|LEFT_TO_RIGHT
  - CommonProgramFiles: C:\Program Files\Common Files
  - CommonProgramFiles(x86): C:\Program Files (x86)\Common Files
  - CommonProgramW6432: C:\Program Files\Common Files
  - COMPUTERNAME: PCXXX
  - ComSpec: C:\Windows\system32\cmd.exe
  - DriverData: C:\Windows\System32\Drivers\DriverData
  - EFC_6464: 1
  - FPS_BROWSER_APP_PROFILE_STRING: Internet Explorer
  - FPS_BROWSER_USER_PROFILE_STRING: Default
  - HOMEDRIVE: C:
  - HOMEPATH: \Users\franc
  - IntelliJ IDEA: C:\Program Files\JetBrains\IntelliJ IDEA 2023.1.2\bin;
  - IntelliJ IDEA Community Edition: C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.2\bin;
  - JAVA_HOME: C:\Program Files\Java\jdk-20
  - LOCALAPPDATA: C:\Users\franc\AppData\Local
  - LOGONSERVER: \\PCXXX
  - NUMBER_OF_PROCESSORS: 8
  - OneDrive: C:\Users\franc\OneDrive
  - OS: Windows_NT
  - Path: C:\Program Files\PostgreSQL\16\pgAdmin 4\runtime;C:\Program Files\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\nodejs\;C:\Program Files\Git\cmd;C:\Users\franc\.console-ninja\.bin;C:\Users\franc\AppData\Local\Programs\Python\Python311\Scripts\;C:\Users\franc\AppData\Local\Programs\Python\Python311\;C:\Users\franc\AppData\Local\Microsoft\WindowsApps;C:\Users\franc\AppData\Local\Programs\Microsoft VS Code\bin;C:\msys64\usr\bin;C:\MinGW\bin;;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.2\bin;;C:\Program Files\JetBrains\IntelliJ IDEA 2023.1.2\bin;;C:\Users\franc\AppData\Roaming\npm;C:\Program Files\heroku\bin;C:\Users\franc\AppData\Local\Programs\mongosh\
  - PATHEXT: .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
  - PGADMIN_INT_KEY: 11ce715e-53fb-4267-9039-fdb7f31c92a5
  - PGADMIN_INT_PORT: 50386
  - PGADMIN_SERVER_MODE: OFF
  - PROCESSOR_ARCHITECTURE: AMD64
  - PROCESSOR_IDENTIFIER: AMD64 Family 23 Model 104 Stepping 1, AuthenticAMD
  - PROCESSOR_LEVEL: 23
  - PROCESSOR_REVISION: 6801
  - ProgramData: C:\ProgramData
  - ProgramFiles: C:\Program Files
  - ProgramFiles(x86): C:\Program Files (x86)
  - ProgramW6432: C:\Program Files
  - PSModulePath: C:\Program Files\WindowsPowerShell\Modules;C:\Windows\system32\WindowsPowerShell\v1.0\Modules
  - PUBLIC: C:\Users\Public
  - SESSIONNAME: Console
  - SystemDrive: C:
  - SystemRoot: C:\Windows
  - TEMP: C:\Users\franc\AppData\Local\Temp
  - TMP: C:\Users\franc\AppData\Local\Temp
  - USERDOMAIN: PCXXX
  - USERDOMAIN_ROAMINGPROFILE: PCXXX
  - USERNAME: franc
  - USERPROFILE: C:\Users\franc
  - VBOX_MSI_INSTALL_PATH: C:\Program Files\Oracle\VirtualBox\
  - windir: C:\Windows
--------------------------------------------------------

Total spawn time to start the pgAdmin4 server: 0.014 Sec
Traceback (most recent call last):
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgAdmin4.py", line 104, in <module>

    app = create_app()
          ^^^^^^^^^^^^
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgadmin\__init__.py", line 760, in create_app
    app.register_blueprint(module)
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\flask\scaffold.py", line 50, in wrapper_func
    return f(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\flask\app.py", line 1299, in register_blueprint
    blueprint.register(self, options)
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgadmin\tools\__init__.py", line 52, in register
    from .psql import blueprint as module
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\web\pgadmin\tools\psql\__init__.py", line 15, in <module>
    from eventlet.green import subprocess
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\__init__.py", line 17, in <module>
    from eventlet import convenience
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\convenience.py", line 4, in <module>
    from eventlet import greenpool
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\greenpool.py", line 4, in <module>

    from eventlet import queue
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\queue.py", line 49, in <module>
    from eventlet.event import Event
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\event.py", line 3, in <module>
    from eventlet import hubs
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\hubs\__init__.py", line 7, in <module>
    from eventlet.support import greenlets as greenlet
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\support\__init__.py", line 6, in <module>
    from eventlet.support import greenlets
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\eventlet\support\greenlets.py", line 3, in <module>
    import greenlet
  File "C:\Program Files\PostgreSQL\16\pgAdmin 4\python\Lib\site-packages\greenlet\__init__.py", line 29, in <module>
    from ._greenlet import _C_API # pylint:disable=no-name-in-module
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: DLL load failed while importing _greenlet: Impossibile trovare il modulo specificato.

我在网上搜索相关解决方案，但结果极少且说明模糊，多次卸载重装PostgreSQL及pgAdmin后问题仍未解决，恳请有相同经历的用户提供帮助。

内容的提问来源于stack exchange，提问作者fmerighi