# Traefik error after replacing cert

**URL:** <https://community.traefik.io/t/traefik-error-after-replacing-cert/10117>\
**Category:** Traefik v1\
**Tags:** service-fabric\
**Created:** [March 19, 2021, 3:48pm UTC](https://community.traefik.io/t/traefik-error-after-replacing-cert/10117 "2021-03-19T15:48:07Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![mccw1](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mccw1/32/3570_2.png) [@mccw1](https://community.traefik.io/u/mccw1)\
**Post date:** [March 19, 2021, 3:48pm UTC](https://community.traefik.io/t/traefik-error-after-replacing-cert/10117/1 "2021-03-19T15:48:07Z")

</div>

We're in the process of replacing our wildcard cert and whenever I update the certificates in Traefik it will no longer start and I receive the following error in the log:

level=fatal msg="Error preparing server: error opening listener: listen tcp :80: bind: An attempt was made to access a socket in a way forbidden by its access permissions."

We are running Traefik v1.7.28 in Service Fabric

Entrypoint:  
[entryPoints]  
[entryPoints.http]  
address = ":80"  
[entryPoints.http.redirect]  
entryPoint = "https"  
[entryPoints.https]  
address = ":443"  
[entryPoints.https.tls]  
[[entryPoints.https.tls.certificates]]  
certFile = "certs/servicefabric.crt"  
keyFile = "certs/servicefabric.key"  
[entryPoints.traefik]  
address = ":8080"

TLS:  
[serviceFabric.tls]  
cert = "certs/servicefabric.crt"  
key = "certs/servicefabric.key"  
insecureskipverify = true  
UseCertificateAuth = true  
ClientCertFilePath = "certs/traefik.crt"  
ClientCertKeyFilePath = "certs/traefik.key"  
InsecureSkipVerify = true