我有一个随我的IIS应用程序一起分发的DLL，它现在突然没有加载到实时服务器上。当我重新启动服务器时，DLL正确加载，一切都很好。在一段时间不活动（可能超时或垃圾收集清理）之后，不再发现DLL了。但它仍然在同一个地方，没有任何改变。
查看程序集绑定日志（fuscion日志查看器），它似乎不再尝试从/ bin目录加载DLL，而是现在从主目录本身加载。
两个主要问题：
1）可能导致系统想要从主路径加载它的原因
2）为什么它甚至不尝试从/ bin加载。
我正在附上下面的日志文件。
*** Assembly Binder Log Entry (27/05/2014 @ 11:27:53) ***
The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.
Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Running under executable c:\windows\system32\inetsrv\w3wp.exe
--- A detailed error log follows.
=== Pre-bind state information ===
LOG: User = NT AUTHORITY\NETWORK SERVICE
LOG: DisplayName = Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicK eyToken=31bf3856ad364e35
(Fully-specified)
LOG: Appbase = file:///C:/Program Files/MyProject/
LOG: Initial PrivatePath = C:\Program Files\MyProject\bin
LOG: Dynamic Base = C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\f05ee030
LOG: Cache Base = C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\f05ee030
LOG: AppName = 576b7a99
Calling assembly : MyProject, Version=1.0.0.1, Culture=neutral, PublicKeyToken=b281b283028a3f6b.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Program Files\MyProject\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: Microsoft.IdentityModel, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
LOG: GAC Lookup was unsuccessful.
LOG: Attempting download of new URL file:///C:/Program Files/MyProject/Microsoft.IdentityModel.dll.
LOG: All probing URLs attempted and failed.
感谢您的帮助。