# IoT Gateway 1.1 OPC-UA Application Certificate

**URL:** <https://tech-community.robotics.abb.com/t/iot-gateway-1-1-opc-ua-application-certificate/10589>\
**Category:** IRC5\
**Created:** [February 17, 2022, 9:14am UTC](https://tech-community.robotics.abb.com/t/iot-gateway-1-1-opc-ua-application-certificate/10589 "2022-02-17T09:14:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mai\_col](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@mai\_col](https://tech-community.robotics.abb.com/u/mai_col)\
**Post date:** [February 17, 2022, 9:14am UTC](https://tech-community.robotics.abb.com/t/iot-gateway-1-1-opc-ua-application-certificate/10589/1 "2022-02-17T09:14:24Z")

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We have an issue with an application not able to connect to IoT Gateway due to an issue with the DNS name stored in the Application Certificate.  
When trying to create a new certificate → Error “The CertificateGenerator utility is not installed”  
When trying to import a certificate → IoT Gateway configuration application hangs

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**Author:** ![Doyel\_Joseph](https://avatars.discourse-cdn.com/v4/letter/d/f9ae1b/32.png) [@Doyel\_Joseph](https://tech-community.robotics.abb.com/u/Doyel_Joseph)\
**Post date:** [February 18, 2022, 11:23am UTC](https://tech-community.robotics.abb.com/t/iot-gateway-1-1-opc-ua-application-certificate/10589/2 "2022-02-18T11:23:28Z")

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Hi,

Can you provide the information on :

1. IoT Gateway version and the build number

2. RW version and build

kindly attach the screen shorts of the error that you got and and also the reproduction steps.

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**Author:** ![CSSR\_Jerry](https://avatars.discourse-cdn.com/v4/letter/c/82dd89/32.png) [@CSSR\_Jerry](https://tech-community.robotics.abb.com/u/CSSR_Jerry)\
**Post date:** [November 2, 2022, 8:45am UTC](https://tech-community.robotics.abb.com/t/iot-gateway-1-1-opc-ua-application-certificate/10589/3 "2022-11-02T08:45:10Z")

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Hi，

I meet the similar problem, the certificate expired and when trying to create a new certificate → Error “The CertificateGenerator utility is not installed”

1. IoT Gateway version and the build number  
1.2.1.0
2. RW version and build  
6.14.00.01

Thanks and BR.