MySQL Bugs: #118799: Error "Failed to create an IPC port: Access is denied" when multiple users run MySQL Workbench on RDS server

Bug #118799	Error "Failed to create an IPC port: Access is denied" when multiple users run MySQL Workbench on RDS server
Submitted:	8 Aug 2025 7:45	Modified:	11 Aug 2025 6:59
Reporter:	Ahmad Hazim	Email Updates:
Status:	Won't Fix	Impact on me:	None
Category:	MySQL Workbench	Severity:	S3 (Non-critical)
Version:	8.0.42 Community	OS:	Windows
Assigned to:	Assigned Account	CPU Architecture:	Any
Tags:	MySQL Workbench 8.0.42 on WIndows

Description:
Hi,

We are encountering an issue when running MySQL Workbench on our RDS server using a shared account. The application works as expected for the first user who launches it. However, when a second user attempts to open MySQL Workbench at the same time, the following error appears: "Failed to create an IPC port: Access is denied". 

How to repeat:
1. Log in to RDS server with the shared account.
2. User A launches MySQL Workbench — the application opens and connects successfully.
3. User B logs into RDS (separate session) with the same shared account.
4. User B attempts to launch MySQL Workbench.
5. Error message appears: "Failed to create an IPC port: Access is denied".

Suggested fix:
- Whether MySQL Workbench supports concurrent use in an RDS environment with the same user account.

- Any configuration or permission changes needed to allow multiple sessions.

Posted by developer:

This issue applies to the legacy MySQL Workbench 8.x implementation that is no longer supported or maintained.
MySQL Workbench 26.7 is a complete rewrite using a new technology stack and does not use the affected legacy implementation.
Therefore, this issue is not applicable to the current MySQL Workbench product and as such is closed.