| `WEBSITE_ADD_SITENAME_BINDINGS_IN_APPHOST_CONFIG` | After slot swaps, the app might experience unexpected restarts. The reason is that after a swap, the host-name binding configuration goes out of sync, which by itself doesn't cause restarts. However, certain underlying storage events (such as storage volume failovers) might detect these discrepancies and force all worker processes to restart.<br/><br/>To minimize these types of restarts, set the app setting value to `1` on all slots. (The default is `0`.) But don't set this value if you're running a Windows Communication Foundation application. For more information, see [Troubleshoot swaps](deploy-staging-slots.md#troubleshoot-swaps). |
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