asl.dll 相关的错误可能源于多种不同原因。比如，错误的应用程序、 asl.dll 被删除或放错位置、被您 PC 上存在的恶意软件破坏、损坏的 Windows 注册表等。
最常出现的错误信息是：
- 程序无法启动，因为您的计算机缺少 asl.dll 。尝试重新安装程序来解决这个问题。
- 启动 asl.dll 发生错误。无法找到指定的模块
- 加载 asl.dll 发生错误。无法找到指定的模块
- asl.dll 的设计可能不适合在 Windows 上运行，或可能包含错误。
在绝大多数情况下，解决方案是在您的 PC 上正确地重新安装 asl.dll 到 Windows 系统文件夹。 此外，有的程序，特别是 PC 游戏，要求 DLL 文件放置在游戏/应用程序安装文件夹。
获取详细安装指南，请查看我们的 FAQ 。
关于 asl.dll 的其他信息：
Apple has released a new version of iTunes, iTunes 9.1 which changes how certain things work. If you have upgraded to iTunes 9.1 or later, several programs will start giving you an error that ASL.dll is missing.
This problem also occurs while trying to jailbreak iPhone using Blackra1n, when running the executable will give you an error saying that ASL.dll is missing as shown in the above screenshot.
NOTE: we do not recommend doing this because it can seriously compromise your system security! If you are sure you want to, however, here's how to fix the blackra1n issue:
The solution for this is simple, you will need to place the Blackra1n executables in the Apple folder under Common files in Program Files. The folder would be located in the following locations:
32 Bit – C:Program FilesCommon FilesAppleApple Application Support
64 Bit – C:Program Files (x86)Common FilesAppleApple Application Support
Once you copy the blackra1n executable to the above folder, create a shortcut for it on the desktop and double-click it to run it as usual.