https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92867#M42558 I am unable to launch the mainframe app on my vdi, I get the below error "Failed to perform step 1 in Navigate Stage 'Navigate1' on page 'Initialise' - Launch failed: Error from ConnectToHostOrSession: Failed to connect to Attachmate host A with an unknown error code. The error code was -1". However, when a colleague runs the business object on his vdi, the application launches. Suggestions welcome. Wed, 31 Aug 2016 16:21:00 GMT john_shiels 2016-08-31T16:21:00Z https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92867#M42558 I am unable to launch the mainframe app on my vdi, I get the below error "Failed to perform step 1 in Navigate Stage 'Navigate1' on page 'Initialise' - Launch failed: Error from ConnectToHostOrSession: Failed to connect to Attachmate host A with an unknown error code. The error code was -1". However, when a colleague runs the business object on his vdi, the application launches. Suggestions welcome. Wed, 31 Aug 2016 16:21:00 GMT https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92867#M42558 john_shiels 2016-08-31T16:21:00Z https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92868#M42559 By changing Mainframe configuration on my vdi, I was able to resolve. Thu, 01 Sep 2016 18:57:00 GMT https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92868#M42559 john_shiels 2016-09-01T18:57:00Z https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92869#M42560 Hey JShiels, do you have any specifics to resolve this? Facing a similar issue. Mon, 08 May 2017 21:37:00 GMT https://community.blueprism.com/t5/Product-Forum/Mainframe-app-not-launching/m-p/92869#M42560 JerryCrowley 2017-05-08T21:37:00Z