SharePoint2016: Using the attachment upload space of the Nintex form, after uploading the attachment, when checking the attachment, an error message appears: System Runtime InteropServices COMException: Unable to open file # # attname##
![](https://uploads-us-west-2.insided.com/nintex-us/attachment/d4c5c16e-0dd9-4e88-b05a-4680459bac6f.png)
System.Runtime.InteropServices.COMException: 无法打开文件 ##attname##。 在 Microsoft.SharePoint.Library.SPRequestInternalClass.GetFileAsStream(String bstrUrl, String bstrWebRelativeUrl, Boolean bHonorLevel, Byte iLevel, OpenBinaryFlags grfob, String bstrEtagNotMatch, Object punkSPFileMgr, Boolean bHonorCustomIrm, IrmProtectionParams fileIrmSettings, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage, String& pEtagNew, String& pContentTagNew, SPFileInfo& pFileProps) 在 Microsoft.SharePoint.Library.SPRequest.GetFileAsStream(String bstrUrl, String bstrWebRelativeUrl, Boolean bHonorLevel, Byte iLevel, OpenBinaryFlags grfob, String bstrEtagNotMatch, Object punkSPFileMgr, Boolean bHonorCustomIrm, IrmProtectionParams fileIrmSettings, UInt32& pdwVirusCheckStatus, String& pVirusCheckMessage, String& pEtagNew, String& pContentTagNew, SPFileInfo& pFileProps)
Looking for help to solve the above problems, thanks.