You need to enable JavaScript to run this app.
优惠活动
大模型
产品
解决方案
定价
更多

VSTO Word加载项新安装后无法运行，求助排查解决

avatar
数据老陈
2026-7-7
问题：Word VSTO加载项程序集加载失败（FileNotFoundException）

多款此前可正常安装运行的Word VSTO加载项，现在使用相同安装文件均出现运行时错误。为排查问题，使用Word VSTO加载项模板创建新项目（配置：.Net 4.8、Any CPU、Word 2304、Visual Studio 17.7.6），调试时触发如下错误：

Could not load file or assembly 'WordAddIn1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.


************** Exception Text **************
System.IO.FileNotFoundException: Could not load file or assembly 'WordAddIn1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
File name: 'WordAddIn1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' ---> System.IO.FileNotFoundException: Could not load file or assembly 'WordAddIn1, Version=1.0.0.0, Culture=neutral' or one of its dependencies. The system cannot find the file specified.
File name: 'WordAddIn1, Version=1.0.0.0, Culture=neutral'

=== Pre-bind state information ===
LOG: DisplayName = WordAddIn1, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL
 (Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: WordAddIn1, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL | Domain ID: 2
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
LOG: Appbase = file:///C:/Users/jzhou/source/repos/WordAddIn1/WordAddIn1/bin/Debug/
LOG: Initial PrivatePath = NULL
Calling assembly : (Unknown).
===
LOG: This bind starts in default load context.
LOG: No application configuration file found.
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Users/jzhou/source/repos/WordAddIn1/WordAddIn1/bin/Debug/WordAddIn1.DLL.
LOG: No application configuration file found.
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
ERR: Failed to complete setup of assembly (hr = 0x80070002). Probing terminated.

   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.Load(String assemblyString)
   at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.ExecuteCustomization.CreateEntryPoint(String entryPointTypeName)
   at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.ExecuteCustomization.Microsoft.VisualStudio.Tools.Office.Runtime.Interop.IExecuteCustomization2.LoadEntryPoints(IntPtr serviceProvider)



************** Loaded Assemblies **************
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Office.Runtime
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Office.Runtime/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Office.Runtime.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Hosting
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Hosting/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Hosting.dll
----------------------------------------
System
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Configuration
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Core
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Security
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Security/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Security.dll
----------------------------------------
System.Xml
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Runtime
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Runtime/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Runtime.dll
----------------------------------------
System.Deployment
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Deployment/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Deployment.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.ServerDocument
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.ServerDocument/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.ServerDocument.dll
----------------------------------------
System.Windows.Forms
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Xml.Linq
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9037.0 built by: NET481REL1
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------
Microsoft.Office.Tools
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.dll
----------------------------------------
Microsoft.Office.Tools.Word.Implementation
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools.Word.Implementation/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Word.Implementation.dll
----------------------------------------
Microsoft.Office.Tools.Common.Implementation
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools.Common.Implementation/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Common.Implementation.dll
----------------------------------------
Microsoft.Office.Tools.Common
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools.Common/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Common.dll
----------------------------------------
Microsoft.Office.Tools.Word
    Assembly Version: 10.0.0.0
    Win32 Version: 10.0.60910.0
    CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools.Word/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.Word.dll
----------------------------------------

该问题存在于所有调试项目及已发布版本的安装过程中，已尝试以下方案但均未解决：

  • 重建解决方案
  • 在同事机器上重建项目
  • 全新虚拟机中重新安装Visual Studio 2022和VSTO
  • 在不同版本Word（2304、2208、2102，含64位/32位）及不同电脑上安装加载项
  • 更换自签名代码证书

当前仅在Word 2022版本的VDI环境中可正常安装运行加载项，但VDI会在用户注销后重置数据。此外，此前已安装加载项的用户未出现问题，仅新安装时触发错误。怀疑是环境变更导致，寻求解决思路。

内容的提问来源于stack exchange，提问作者John

相关产品推荐
方舟 Agent Plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列、Doubao-Seedream-5.0-pro、Kimi-K3 (部分)， 限时 9.9 元起

产品介绍相关文档
相关产品推荐
方舟 Agent Plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列、Doubao-Seedream-5.0-pro、Kimi-K3 (部分)， 限时 9.9 元起

产品介绍相关文档
火山引擎 最新活动
全面开放
Doubao-Seedance-2.5全新模型升级

模型再升级,30秒超长叙事, 模态参考扩容

HOT
方舟Codingplan

模型自由，工具不限，最新支持 Deepseek-V4 系列、GLM-5.3 系列

HOT
方舟Agent plan

超全模态模型 × Harness 升级，最新支持 Deepseek-V4.1-Flash、GLM-5.3 系列

HOT
新用户特惠专场

大模型19元起，Al应用9.9元畅享，新人首购爆款尽享优惠

最近更新时间：2026.07.07 13:25:54