I appreciate you bringing this to our attention. I am currently coordinating with the product team to understand the potential cause of the issue. Meanwhile, it would be helpful if you could provide additional information, such as your machine specifications and operating system version, as this will assist us in pinpointing the problem. Additionally, please attempt to launch your system in Safe Mode with the InDesign Beta to check if Slack connects there. This will help us ascertain if another background service could be contributing to the issue. Reference: https://adobe.ly/4j41g2s
It would also be beneficial to know if Slack only fails in the desktop application or if the web version is also impacted, and whether the issue persists when switching between Wi-Fi, Ethernet, or a mobile hotspot. If you are using any VPN, firewall, or security software, please try disabling them and let us know the outcome.
I look forward to your response.
Abhishek