# Client won't open with Redundancy **URL:** \ **Category:** Ignition\ **Tags:** ignition80\ **Created:** [July 23, 2021, 11:54am UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130 "2021-07-23T11:54:49Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![c.bertulli](https://avatars.discourse-cdn.com/v4/letter/c/f19dbf/32.png) [@c.bertulli](https://forum.inductiveautomation.com/u/c.bertulli)\ **Post date:** [July 23, 2021, 11:54am UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/1 "2021-07-23T11:54:49Z")
Hi All, I've set up two Ignition servers ( 8.0.17 ) for redundancy. Obviously one Master and one Backup. Everything is set up correctly and working fine, except in one case. If the Backup server is down it's impossible to launch a client. It stays something like 10 seconds on this screen ![Immagine](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/5/8586eeb205d60a174a685b4ede29077e84c65ae5.png) Then the screen disappears and nothing else happens. As soon as I turn off the redundancy or I turn on the Backup server the client can be launched. I've checked in the VisionClientLauncher.log and found this ```auto INFO [GatewayConnect] [2021/07/23 10:33:13]: Attempting to connect to gateway http://192.168.19.30:8088... INFO [LaunchUtil] [2021/07/23 10:33:14]: Starting Java with the following parameters: C:\Users\Tecno\.ignition\cache\resources\runtimes\11.0.7\bin\java.exe -classpath C:\Users\Tecno\.ignition\clientlauncher-data\launchclient.jar -Djavaws.sr.gateway.addr.0=http://192.168.19.30:8088 -Djavaws.sr.gateway.addr.1=http://192.168.19.29:8088 -Djavaws.sr.launchts=1627029194674 -Djavaws.sr.main=com.inductiveautomation.factorypmi.application.runtime.ClientLaunchHook -Djavaws.sr.platform.edition= -Djavaws.sr.platform.plugins= -Xms32M -Xmx256M -Djavaws.sr.memory.init=32M -Djavaws.sr.memory.max=256M -Dsun.java2d.d3d=false -Dsun.java2d.noddraw=false -Djavaws.sr.screen=0 -Djavaws.sr.scope=C -Djavaws.sr.project=IP1 com.inductiveautomation.ignition.client.launch.BootstrapSwingFS INFO [GatewayConnect] [2021/07/23 10:37:15]: Attempting to connect to gateway http://192.168.19.30:8088... WARN [CertificateCheckService] [2021/07/23 10:37:17]: A Communication error occurred when attempted to communicate with the backup gateway 'http://192.168.19.29:8088'. Launching will continue, but no certificate checking can be performed while it is down java.net.ConnectException: Connection refused: connect at java.base/java.net.PlainSocketImpl.waitForConnect(Native Method) at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:107) at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399) at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242) at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224) at java.base/java.net.Socket.connect(Socket.java:609) at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:177) at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474) at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569) at java.base/sun.net.www.http.HttpClient.(HttpClient.java:242) at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:341) at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:362) at java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1248) at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1187) at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081) at java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1015) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1587) at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1515) at java.base/java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:527) at com.inductiveautomation.ignition.launcher.common.utils.GatewayCommUtil.getGatewayConnection(GatewayCommUtil.java:181) at com.inductiveautomation.ignition.launcher.common.utils.GatewayCommUtil.getGatewayConnection(GatewayCommUtil.java:113) at com.inductiveautomation.ignition.launcher.common.utils.GatewayCommUtil.getGatewayRawResponse(GatewayCommUtil.java:263) at com.inductiveautomation.ignition.launcher.common.utils.GatewayCommUtil.getGatewayInfo(GatewayCommUtil.java:396) at com.inductiveautomation.ignition.launcher.common.utils.CertificateCheckService.lambda$checkGateway$4(CertificateCheckService.java:172) at com.inductiveautomation.ignition.launcher.common.utils.SimpleService$1.call(SimpleService.java:23) at javafx.concurrent.Task$TaskCallable.call(Task.java:1425) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at javafx.concurrent.Service.lambda$executeTask$6(Service.java:725) at java.base/java.security.AccessController.doPrivileged(Native Method) at javafx.concurrent.Service.lambda$executeTask$7(Service.java:724) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) ``` There are other posts like mine but none have a solution > [@8.0.13 Client Launcher Not installing Apps](https://forum.inductiveautomation.com/t/8-0-13-client-launcher-not-installing-apps/35763): > > Recently updated the gateway to 8.0.13 and cannot use the client launcher to install apps. My work around was to reinstall the client launcher from an older gateway 8.0.12 which then was able to install the icon, app and launch the app. Bug? > [@Redundancy and Vision Client Ignition 8](https://forum.inductiveautomation.com/t/redundancy-and-vision-client-ignition-8/39117): > > Hi, I have some issue with redundancy setup. Master Server 1 NIC Card IP1: 192.168.2.200 IP2: 192.168.1.200 Gateway: 192.168.2.1 Backup Server 1 NIC Card IP1: 192.168.2.199 IP2: 192.168.1.199 Gateway: 192.168.2.1 Master and Backup Server is connected to 4G Modem Router (192.168.2.1) Client PC IP1: 192.168.3.201 Gateway: 192.168.3.1 Client PC connected to 4G Modem Router (192.168.3.1) Im using IPSec to link the network. When i try to open client PC, it says attemp to connect to 1… Any help? Cheers, ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 23, 2021, 12:47pm UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/2 "2021-07-23T12:47:56Z")
It seems this was fixed in 8.1.0. ---
**Author:** ![Matrix\_Engineering](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/matrix_engineering/32/19781_2.png) [@Matrix\_Engineering](https://forum.inductiveautomation.com/u/Matrix_Engineering)\ **Post date:** [July 23, 2021, 12:49pm UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/3 "2021-07-23T12:49:22Z")
@althepal will comment, on linux redundancy doesn’t work on 8.1.0 he can advise which it does ---
**Author:** ![AlThePal](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/althepal/32/3603_2.png) [@AlThePal](https://forum.inductiveautomation.com/u/AlThePal)\ **Post date:** [July 26, 2021, 10:47am UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/4 "2021-07-26T10:47:53Z")
We were told there was a bug (IGN-1663) with Ignition redundancy synchronisation, which left the Master and Standby both trying to act as the master. This caused issues with logging, which was what we were seeing. This was apparently fixed in version 8.1.3, although we’ve not tested upgrading the system to this version to test it. Although this is not the issue you were having, it might be sensible to upgrade to at least 8.1.3 to avoid this potential problem. ---
**Author:** ![c.bertulli](https://avatars.discourse-cdn.com/v4/letter/c/f19dbf/32.png) [@c.bertulli](https://forum.inductiveautomation.com/u/c.bertulli)\ **Post date:** [July 26, 2021, 11:42am UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/5 "2021-07-26T11:42:19Z")
Thanks to all for the help 🙂 If the only option is to upgrade from 8.0.17 to 8.1.3 or above, I’ll try in a test environment and let you know. Cheers, ---
**Author:** ![c.bertulli](https://avatars.discourse-cdn.com/v4/letter/c/f19dbf/32.png) [@c.bertulli](https://forum.inductiveautomation.com/u/c.bertulli)\ **Post date:** [July 28, 2021, 8:34am UTC](https://forum.inductiveautomation.com/t/client-wont-open-with-redundancy/49130/6 "2021-07-28T08:34:29Z")
So, I tested with 8.1.7, and it worked. Cheers and thanks for the feedback 🙂