# Certificate invalid error while accessing the Ansible Tower URL from a Windows Server - internet explorer **URL:** \ **Category:** Ansible Project\ **Tags:** windows, rhel\ **Created:** [March 25, 2019, 5:11pm UTC](https://forum.ansible.com/t/certificate-invalid-error-while-accessing-the-ansible-tower-url-from-a-windows-server-internet-explorer/29977 "2019-03-25T17:11:12Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Muthu\_R\_D](https://avatars.discourse-cdn.com/v4/letter/m/7feea3/32.png) [@Muthu\_R\_D](https://forum.ansible.com/u/Muthu_R_D)\ **Post date:** [March 25, 2019, 5:11pm UTC](https://forum.ansible.com/t/certificate-invalid-error-while-accessing-the-ansible-tower-url-from-a-windows-server-internet-explorer/29977/1 "2019-03-25T17:11:12Z")
Certificate invalid error while accessing the Ansible Tower URL from a Windows Server - internet explorer. Ansible Tower own support edition installed on RHEL 7.3. Trying to access the Tower Server URL from a windows machine and got the error 'Certificate Invalid" Please help, What I suppose to do???.. ---
**Author:** ![Jonathan\_Lozada\_De\_L](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@Jonathan\_Lozada\_De\_L](https://forum.ansible.com/u/Jonathan_Lozada_De_L)\ **Post date:** [March 25, 2019, 5:12pm UTC](https://forum.ansible.com/t/certificate-invalid-error-while-accessing-the-ansible-tower-url-from-a-windows-server-internet-explorer/29977/2 "2019-03-25T17:12:24Z")
Ansible Tower creates a self signed cert automatically. You need to accept the certificate. It varies by browser on how you do it. ---
**Author:** ![Mauricio\_Tavares](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@Mauricio\_Tavares](https://forum.ansible.com/u/Mauricio_Tavares)\ **Post date:** [March 25, 2019, 6:31pm UTC](https://forum.ansible.com/t/certificate-invalid-error-while-accessing-the-ansible-tower-url-from-a-windows-server-internet-explorer/29977/3 "2019-03-25T18:31:53Z")
> Ansible Tower creates a self signed cert automatically. You need to accept the certificate. It varies by browser on how you do it.       Can you feed it a (non-self signed) cert you created (using letsencrypt or a commercial solution)? ---
**Author:** ![Jonathan\_Lozada\_De\_L](https://avatars.discourse-cdn.com/v4/letter/j/eb8c5e/32.png) [@Jonathan\_Lozada\_De\_L](https://forum.ansible.com/u/Jonathan_Lozada_De_L)\ **Post date:** [March 25, 2019, 6:38pm UTC](https://forum.ansible.com/t/certificate-invalid-error-while-accessing-the-ansible-tower-url-from-a-windows-server-internet-explorer/29977/4 "2019-03-25T18:38:12Z")
[https://docs.ansible.com/ansible-tower/latest/html/installandreference/install\_notes\_reqs.html#installation-notes](https://docs.ansible.com/ansible-tower/latest/html/installandreference/install_notes_reqs.html#installation-notes)