HI to all, I have read the other topics related to this subject and I have not managed to find a solution. I am having this issue upon running a process in a fresh new environment. The process uses REF and the error occurs in the INIT state, in Init Settings. when trying to reach the Config file. …

Hi @rspantu Please have a look at the below thread. [image] Could not load file or assembly 'ClosedXML, Version=0.87.0.0' How to remove the reference of this version from the project Studio Read range (Settings and Constants sheets): Could not load file or assembly ‘Clos…

Thanks @Jobin_Joy for taking the time to reply to my thread. These solves were already tested before issuing the thread. Moreover, my process relates to an excel of 24kb, with 2-3 sheets and maximum 10 rows. This is located in the project folder as a Config file. The process does not have Excel …

[image] rspantu: The process does not have Excel activities package installed as this is not required. Kindly ensure you installed the below package into your project. [image] Read Range activity will be utilizing the above package to perform the respective actions internally. Thank you.

Hi @Jobin_Joy , Thanks again for taking the time to reply to my thread. I am not reading the file using the Excel Activity scope, as MS Excel is not and will not be installed on the VM. The file is brought to the project folder and read with the Read Range activity within the System scope. This …

Can you please share the code base here as a zip file after removing sensitive data if anything? So that I can look into the code and fix it. Thank you.

Hi @Jobin_Joy , I can honestly say that the code is not the issue. The same workflow (not even a log message or a comma are different) works smoothly in another project within the same environment. The code is the standard one generated by the REFramework. Thanks, Radu

How about reinstalling UiPath Studio and trying the same?

This is about the ClosedXML package part of the Excel Activities that’s not working. I tried uninstalling, even deleting the folder from the .nuget/packages, and then reinstalling. Nothing works. The only workaround I was able to find - up until this point - was to create another project and copy …

Hi @rspantu did you manage to figure out what was wrong? I’m having same issue, and all points to the UiPath.Excel.Activities that uses ClosedXML that again uses DocumentFormat.OpenXML in a different version than another package I have in the project is using.

Could not load file or assembly 'ClosedXML, Version=0.87.0.0

RPA Discussions

Jobin_Joy (Jobin Thekkekara Joy) January 11, 2022, 5:28pm 2

Hi @rspantu

Please have a look at the below thread.

Hope this will help you. Thank you.

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Could not load file or assembly ClosedXML Help	20	17878	July 22, 2022
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Read range (Settings and Constants sheets): Could not load file or assembly ‘ClosedXML, Version=0.87.0.0 Studio studio , question , upgrade	4	4816	March 26, 2022
Read range (Settings and Constants sheets): Could not load file or assembly Studio uiautomation	5	3666	August 14, 2025
Cannot load assembly: ClosedXML.dll : System.IO.FileLoadException: Could not load file or assembly 'DocumentFormat.OpenXml, Version=2.5.5631.0 Robot activities , studio	1	4311	April 5, 2022

Could not load file or assembly 'ClosedXML, Version=0.87.0.0

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