# Android certificate error

**URL:** https://forum.novacura.com/t/android-certificate-error/618
**Category:** Flow Classic
**Tags:** android-client
**Created:** [February 6, 2024, 2:22pm UTC](https://forum.novacura.com/t/android-certificate-error/618 "2024-02-06T14:22:55Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![caschetp](https://avatars.discourse-cdn.com/v4/letter/c/7C9FD7/32.png) [@caschetp](https://forum.novacura.com/u/caschetp)
#### Post date: [February 6, 2024, 2:22pm UTC](https://forum.novacura.com/t/android-certificate-error/618/1 "2024-02-06T14:22:55Z")

</div>

Hi

I have a few honeywell CK65 units and I have loaded the android client to them. When I try and connect i get the following error  
Has any one come across this before ?

Thanks

Paul

java security certpathvalidatorexception , trust anchor for certification path not found

---

<div class="post-metadata">

### Author: ![OlaCarlander](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.novacura.com/olacarlander/32/205_2.png) [@OlaCarlander](https://forum.novacura.com/u/OlaCarlander)
#### Post date: [February 6, 2024, 8:37pm UTC](https://forum.novacura.com/t/android-certificate-error/618/2 "2024-02-06T20:37:18Z")

</div>

The certificate that you are using for the flow server URL, is there a way to check if the same certificate exists on the device?

---

<div class="post-metadata">

### Author: ![caschetp](https://avatars.discourse-cdn.com/v4/letter/c/7C9FD7/32.png) [@caschetp](https://forum.novacura.com/u/caschetp)
#### Post date: [February 7, 2024, 3:40pm UTC](https://forum.novacura.com/t/android-certificate-error/618/3 "2024-02-07T15:40:06Z")

</div>

> [@caschetp](#):
>
> java security certpathvalidatorexception , trust anchor for certification path not found

Hi Managed to fix it. There was a certificate missing on the android unit. Adding this and I think it was an older version of the client, so I updated the client and that now seems to work ok.

Thanks

Paul