diff --git a/cmd/tailscale/cli/up.go b/cmd/tailscale/cli/up.go
index 30ab0c0b9..839d8f275 100644
--- a/cmd/tailscale/cli/up.go
+++ b/cmd/tailscale/cli/up.go
@@ -435,7 +435,9 @@ func runUp(ctx context.Context, args []string) error {
 		}
 
 		bc.Start(opts)
-		startLoginInteractive()
+		if upArgs.forceReauth {
+			startLoginInteractive()
+		}
 	}
 
 	select {