What is DocumentFormat.OpenXml?
DocumentFormat.OpenXml is a Microsoft .NET library that allows for the creation, manipulation, and modification of files in the XML-based Open XML document format used by Microsoft Office applications such as Word, Excel, and PowerPoint. It provides developers with a set of classes and methods that make working with Open XML files easier and more efficient.Why does the error occur?
The error \"Could not load file or assembly DocumentFormat.OpenXml version 2.7.2.0\" occurs when the Open XML SDK library is missing, outdated, or not installed correctly. This can happen when you upgrade your Office version or when certain Windows updates are installed, which may break the compatibility with the Open XML SDK library.How to fix the error
There are several ways to fix the \"Could not load file or assembly DocumentFormat.OpenXml version 2.7.2.0\" error, depending on the cause of the issue. Here are some possible solutions:1. Install the latest version of the Open XML SDK library. You can download it from the Microsoft Download Center.
2. Check whether your Office version is compatible with the Open XML SDK library. Some Office versions may require a specific version of the Open XML SDK library, so make sure you have the correct one installed.
3. Check whether your Windows updates are causing the issue. Some Windows updates may interfere with the Open XML SDK library, so try uninstalling them and see if the error goes away.
4. Check whether your application is running in a 32-bit or 64-bit environment. The Open XML SDK library may not be compatible with the architecture of your application, so make sure you are using the correct version of the library.