How to fix "Could not find or load a type. (Exception from HRESULT: 0x80131522)" in Visual Studio 2026

Question

How to fix "Could not find or load a type. (Exception from HRESULT: 0x80131522)" in Visual Studio 2026

Martin 0

I have installed visual studio 2026 and SQL Server Integration Services extension version 2.0 preview. But when I use slowly change dimensions component, the error "Could not find or load a type. (Exception from HRESULT: 0x80131522) (Microsoft Visual Studio)" appears. How can I fix this error?

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Answer 1

Hello hope your doing well thanks for reaching out !

Close Visual Studio

End all Visual Studio instances.
In Task Manager, end any “devenv.exe” processes. Uninstall the SSIS 2.0 Preview extension
Open Visual Studio.
Go to Extensions > Manage Extensions > Installed.
Find “SQL Server Integration Services” (2.0 Preview) and click Uninstall.
Close Visual Studio to complete the uninstall. Install the latest stable SSIS extension (2022+)
Open Visual Studio.
Go to Extensions > Manage Extensions > Online.
Search “SQL Server Integration Services Projects”.
Install the latest stable “2022+” version (not a preview).
Restart Visual Studio when prompted. Update Visual Studio 2026
Open Visual Studio Installer.
Select Visual Studio 2026 and click Update.

Wait for the update to finish, then reboot if asked Clear Visual Studio’s MEF/component cache

Close Visual Studio.

Open File Explorer and go to:

- %LOCALAPPDATA%\Microsoft\VisualStudio\

   - Open your VS 2026 instance folder (e.g., “17.0_xxxxx” or similar).

      - Delete the “ComponentModelCache” folder.

         - Optional: also delete the “Cache” folder if present. **Repair Visual Studio (if needed)**

         - Open Visual Studio Installer.

         - Choose Visual Studio 2026 > More > Repair.

         - After repair, restart your machine. **Reinstall SSIS extension (if it didn’t persist)**

         - Open Visual Studio > Extensions > Manage Extensions > Installed.

         - Confirm “SQL Server Integration Services Projects 2022+” is Installed.

         - If not, repeat Step 3 and restart Visual Studio. **Recreate the Slowly Changing Dimension (SCD) component**

            - Open your SSIS project and package.

               - Delete the existing SCD component.

                  - Drag a new “Slowly Changing Dimension” component onto the Data Flow.

                     - Reconfigure the wizard (source, keys, attribute change types). **Verify target versions and project settings**

                           - In Solution Explorer, right-click the SSIS project > Properties.

                                 - Set TargetServerVersion to the SSIS version you use (e.g., SQL Server 2019 or 2022).

                                       - Save and rebuild the project. **Test on a stable environment if issue persists**

                                                - Install Visual Studio 2022.

                                                         - Install the same “SQL Server Integration Services Projects 2022+” extension.

                                                                  - Open the package and confirm the SCD component loads without errors. **Collect logs if the error still appears**

                                                                  - In Visual Studio, go to Help > View Activity Log.

                                                                  - Check for TypeLoadException or assembly load errors.

                                                                  - Share the log with support to pinpoint the missing assembly  If you want, tell me your exact Visual Studio 2026 instance name (from %LOCALAPPDATA%\Microsoft\VisualStudio) and TargetServerVersion, and I’ll tailor the steps to your setup.

Omkara Varshitha Kunapalli (INFOSYS LIMITED) 1,825 Reputation points Microsoft External Staff

2025-11-19T04:29:10.9233333+00:00

"Hope you're doing well. We're following up on the ticket. Please let us know whether the issue persists or has been resolved. If the issue has been resolved, kindly mark the response as answered"
Omkara Varshitha Kunapalli (INFOSYS LIMITED) 1,825 Reputation points Microsoft External Staff

2025-11-21T04:00:49.3166667+00:00

"Hope you're doing well. We're following up on the ticket. Please let us know whether the issue persists or has been resolved. If the issue has been resolved, kindly mark the response as answered"
Rumaysa Yadwad 0 Reputation points

2025-11-21T06:45:55.9933333+00:00

faced this same error in Visual Studio, and what finally fixed it for me was deleting the bin, obj, and .vs folders and then rebuilding the solution.

This issue usually happens because Visual Studio keeps using old or corrupted build files, even after you update your code or project structure. Those cached files sometimes still hold references to types that either don’t exist anymore or have changed names, which leads to the “Could not find or load a type (HRESULT: 0x80131522)” error.

When I deleted these folders, it basically forced Visual Studio to start fresh.

The next rebuild recreated all the DLLs, intermediate files, and cached metadata properly. After that, the project loaded cleanly without the type-loading error.

So in short, the problem wasn’t my code , it was Visual Studio holding onto outdated build artifacts. Clearing them out fixed it completely.

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How to fix "Could not find or load a type. (Exception from HRESULT: 0x80131522)" in Visual Studio 2026

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