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Date/Time: Tue, 20 Oct 2026 23:22:05 +0000



Subinstance Automatically Connects Main Instance to Data Feed

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[2026-10-20 17:50:30]
User841161 - Posts: 357
I have a second installation of Sierra Chart on my secondary computer. I use the main instance along with Subinstance 5.

In the main instance, under Global Settings → Data/Trade Service Settings → Common Settings, I have Connect on Program Startup set to No.

When I initially launch Sierra Chart, the main instance remains disconnected, as expected. However, when Subinstance 5 starts, it automatically causes the main instance to connect to the data/trading service.

I have also changed both Connect on Program Startup and Reconnect on Failure to No in Subinstance 5, but the main instance still automatically connects.

I would like to have both the main instance and Subinstance 5 open without establishing an external data-feed connection until I manually choose to connect.

Is there a setting that will prevent Subinstance 5 from triggering the main instance to connect automatically?
[2026-10-20 22:53:43]
Sierra_Chart Engineering - Posts: 25227
If the sub instance is automatically connecting and those options are not preventing it, then this is by design and cannot be changed.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

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Date Time Of Last Edit: 2026-10-20 22:54:06

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