Go to Defenition or Go to Implementation stops working abruptly or goes to dll code

_This issue has been moved from [a ticket on Developer Community](https://developercommunity.visualstudio.com/t/Go-to-Defenition-or-Go-to-Implementation/11015339)._

---
[regression] [worked-in:11304.161]
When I use **Go to Implementation (Ctrl+F12)**, it either doesn’t work or takes me to a decompiled file. However, if I click on the interface file instead, I’m able to use Go to Implementation to navigate to the correct implementation in another file.

I run into this issue every time I update VS 2026 Insiders. I do not remember the exact steps, but sometimes restarting Visual Studio fixes this problem.

---
### Original Comments

#### Feedback Bot on 12/12/2025, 00:08 AM:

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.

#### Teh Xian Yoong (Centific Technologies Inc) [MSFT] on 12/18/2025, 01:35 AM:

Thanks for your sharing the detail steps, I can reproduce this issue through your shared steps and this issue has been escalated for further investigation, if there is any process, I will inform you immediately.

#### Feedback Bot on 12/18/2025, 09:26 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.