Sure, here are some possible ways to resolve a Windows app DLL not found library issue:

• Check the system path. The system path is a list of directories that Windows searches for DLL files. If the DLL file that your app is looking for is not in the system path, then Windows will not be able to find it. You can check the system path by opening the System Properties dialog box and clicking on the Advanced tab.
• Copy the DLL file to the system directory. Another way to resolve the DLL not found error is to copy the DLL file to the system directory. The system directory is the directory where Windows stores all of its system files. You can find the system directory by opening the System Properties dialog box and clicking on the Advanced tab.
• Reinstall the app. If you have tried the previous two solutions and you are still getting the DLL not found error, then you may need to reinstall the app. This will reinstall the DLL file and hopefully fix the error.
• Update the app. If the app is not up to date, then there may be a newer version of the DLL file that is available. You can update the app by checking for updates in the app's settings.
• Contact the app developer. If you have tried all of the previous solutions and you are still getting the DLL not found error, then you may need to contact the app developer for help. The app developer may be able to provide you with a newer version of the DLL file or they may be able to help you troubleshoot the issue.

Here are some additional things to keep in mind when resolving DLL not found errors:

• DLL files are dynamic link libraries. They are used by apps to load code and resources that are not included in the app's binary file.
• DLL files can be located in a number of different places, including the system directory, the app's directory, and the user's directory.
• If you are still having trouble resolving the DLL not found error, you can ask for help on a forum or from a developer community.