# Installation problem: 1 signature not checked due to a missing key
**URL:** https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476
**Category:** Support
**Created:** [November 21, 2018, 6:20am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476 "2018-11-21T06:20:01Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@jason404](https://forum.syncthing.net/u/jason404)
#### Post date: [November 21, 2018, 6:20am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/1 "2018-11-21T06:20:02Z")
Hello. I am trying to install syncthing on Debian using this guide:
[https://apt.syncthing.net/](https://apt.syncthing.net/)
However, when I try this, I get this error
```
$ curl -s https://syncthing.net/release-key.txt | sudo apt-key add -
key D26E6ED000654A3E:
1 signature not checked due to a missing key
OK
```
How do I proceed from here? Thanks.
---
### Author:  [@AudriusButkevicius](https://forum.syncthing.net/u/AudriusButkevicius)
#### Post date: [November 21, 2018, 6:37am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/2 "2018-11-21T06:37:54Z")
Have you tried further steps? This might just be a warning.
---
### Author:  [@jason404](https://forum.syncthing.net/u/jason404)
#### Post date: [November 21, 2018, 7:48am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/3 "2018-11-21T07:48:34Z")
Thanks Audrius. I went ahead and installed it.
However, I am surprised to have got v0.14.18 from 2017-04-06, when the version in the standard Debian repository seems to be 0.14.52.
Should I purge everything and just do an `apt install`?
---
### Author:  [@AudriusButkevicius](https://forum.syncthing.net/u/AudriusButkevicius)
#### Post date: [November 21, 2018, 8:05am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/4 "2018-11-21T08:05:54Z")
It’s probably that version in your distro repos, and not syncthing repos, so it just picks that. There is some way to tell it which repo to use.
---
### Author:  [@imsodin](https://forum.syncthing.net/u/imsodin)
#### Post date: [November 21, 2018, 8:22am UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/5 "2018-11-21T08:22:05Z")
You shouldn’t need to, after doing the steps on [apt.syncthing.net](http://apt.syncthing.net) 0.14.52 should be automatically selected as it’s newer. Did you add the `/etc/apt/sources.list.d/syncthing.list` file? And to see available versions and which gets selected, you can run `apt-cache policy syncthing`.
---
### Author:  [@jason404](https://forum.syncthing.net/u/jason404)
#### Post date: [November 21, 2018, 12:22pm UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/6 "2018-11-21T12:22:27Z")
Ah yes, sorry. I seem to have forgot to do the `apt update` before installing. I’ve now done an `apt update` and `apt upgrade` and now I have v0.14.52.
Cheers.
---
### Author:  [@system](https://forum.syncthing.net/u/system)
#### Post date: [December 21, 2018, 12:22pm UTC](https://forum.syncthing.net/t/installation-problem-1-signature-not-checked-due-to-a-missing-key/12476/7 "2018-12-21T12:22:28Z")
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