Errors are not shown in the error list and editor in VS 2026 #81818
Description
This issue has been moved from a ticket on Developer Community.
[severity:It's more difficult to complete my work]
The build errors are not shown in the Error List and in the code editor.
Fresh start of VS 2026, there is a missing method declaration and neither the Error List nor the code editor shows the error.
When building the solution, the error is shown in the Build Log but still no error in the list or the editor.
Original Comments
Feedback Bot on 12/2/2025, 10:34 PM:
We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.
Deepak Rathore (ALLYIS INC) [MSFT] on 12/5/2025, 01:41 PM:
Thank you for taking the time to log this issue!
Sorry for the problem you encountered, in order to better reproduce the problem, could you please use the Feedback tool to create a dump and etl file so that we can conduct further research with the following steps?
- In Visual Studio, use Help->Send Feedback-> ‘My Feedback’.
- Click ‘Provide More Info’.
- Select Attach System logs and click ‘Record your actions to reproduce an issue’
- Perform that steps that cause the issue to occur. (If the issue is intermittent – just work normally until the issue occurs; only the latest data is collected). Note: Pause the Steps Recorder to increase performance
- After the problem occurs, close Steps Recorder to stop the trace; log files will be collected and attached to the ticket.
For more information see How to report a problem with Visual Studio.
We look forward to hearing from you!
U_1539255 on 12/8/2025, 02:57 AM:
(private comment, text removed)
Paul (Purple Piranha Limited) on 12/16/2025, 07:11 AM:
I have exactly the same issue on an intermittant basis.
Visual Studio 2026 - Clean install this week (December 2025 Feature Update (18.1.0).
Project is .NET8
Errors display in output window and I can double click them to find the error in code.
Annoyingly it’s started working again so I can’t share a recording.
Feedback Bot on 12/15/2025, 02:17 AM:
Looking forward to your reply so we can have the necessary information to move this item forward.
Feedback Bot on 12/16/2025, 08:43 AM:
This issue is currently being investigated. Our team will get back to you if either more information is needed, a workaround is available, or the issue is resolved.
Arthur Lee on 12/17/2025, 10:40 PM:
(private comment, text removed)
Original Solutions
U_1539255 solved on 12/4/2025, 09:42 AM, undefined votes:
Hello all,
I’m having the same issue. Additionally, when I debug my code and add variables to my watchlist, the value is always ‘Internal error in the C# compiler’. There is also no pop-up with the usual information when hovering over variables.
As a workaround, I installed the Visual Studio 2026 Insider version. It might be a hassle to configure the second system, but at least the error list and debugging work in this version.