Why is TFS not getting connected Error 503 the service is temporarily overloaded

Question

While trying to connect to TFS, I am getting error "the service is temporarily overloaded".

Even the IE/ Edge is not able to connect to internet.

Both these issues must be interlinked.

I have tried many things given over web, nothing worked.

When I try to add an account I get HTTP code 503: Service Unavailable

Answer 1

According to the error message "Error 503 the service is temporarily overloaded", seems the Private Memory Limit for the Application Pool is not high enough.

Assuming you are using on-premise TFS, try following below steps to narrow down the issue:

1. Open the IIS Manager on your TFS server.
2. Highlight Application Pools and select your Microsoft Team Foundation Server Application Pool from the list.
3. Right-click and select Advanced Settings.
4. Scroll down and check if the Private Memory Limit (KB) is limited, if it's limited, just try to set the value to "0" (A value 0 means there is no limit)
5. Restart the application pool.
6. Also try to restart the TFS server site.

Then try it again.

Other similar threads for your reference:

• HTTP Error 503. The service is unavailable under simple ASP.NET 4.0 web site
• TFS 503 Service Unavailable when retrieving files