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Hi everyone! I’m migrating a project from .NET 4.8 to .NET 8. The ClosedXML library is compatible with .NET 8, but I’m encountering an error when using the XLWorkbook class. Despite installing System.Memory, the error still occurs, as shown in the image below. Has anyone experienced this issue or found a fix? Thanks in advance for any help!
A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Microsoft Technologies based on the .NET software framework. Miscellaneous topics that do not fit into specific categories.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Hi @Artillis Prado , Welcome to Microsoft Q&A,
Make sure both ClosedXML and System.Memory are updated to the latest versions that support .NET 8. Sometimes, dependencies need to be compatible at the same framework level to work seamlessly. Occasionally, lingering cache issues can cause dependency mismatches. Try clearing your NuGet cache (dotnet nuget locals all -clear) and then rebuild your project.
Hi @Artillis Prado ,Did you solve the problem? If it solved your problem I'll turn the comment into an answer.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
did you also include:
System.Numerics.Vectors
System.Buffers
System.Runtime.CompilerServices.Unsafe
though they should have been picked up as transient dependencies.