# Kitware APT repo down?
**URL:** https://discourse.cmake.org/t/kitware-apt-repo-down/13184
**Category:** Usage
**Tags:** os:linux
**Created:** [December 11, 2024, 10:19pm UTC](https://discourse.cmake.org/t/kitware-apt-repo-down/13184 "2024-12-11T22:19:47Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Ryanf55](https://discourse.cmake.org/u/Ryanf55)
#### Post date: [December 11, 2024, 10:19pm UTC](https://discourse.cmake.org/t/kitware-apt-repo-down/13184/1 "2024-12-11T22:19:47Z")
Hello,
I use the kitware apt repository: [https://apt.kitware.com/](https://apt.kitware.com/)
Just today, I noticed I can no longer run apt-get update.
```auto
sudo apt-get update
Get:1 https://download.docker.com/linux/ubuntu jammy InRelease [48.8 kB]
Get:2 http://packages.ros.org/ros2/ubuntu jammy InRelease [4682 B]
Ign:3 https://apt.kitware.com/ubuntu jammy InRelease
Get:4 https://download.docker.com/linux/ubuntu jammy/stable amd64 Packages [49.8 kB]
Hit:5 http://archive.ubuntu.com/ubuntu jammy InRelease
Get:6 http://packages.ros.org/ros2/ubuntu jammy/main amd64 Packages [1632 kB]
Get:7 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB]
Get:8 http://archive.ubuntu.com/ubuntu jammy-updates InRelease [128 kB]
Get:9 http://archive.ubuntu.com/ubuntu jammy-backports InRelease [127 kB]
Get:10 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages [2458 kB]
Get:11 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1516 kB]
Ign:3 https://apt.kitware.com/ubuntu jammy InRelease
Get:12 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [2753 kB]
Get:13 http://security.ubuntu.com/ubuntu jammy-security/restricted amd64 Packages [3331 kB]
Get:14 http://archive.ubuntu.com/ubuntu jammy-updates/restricted amd64 Packages [3475 kB]
Get:15 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages [1226 kB]
Ign:3 https://apt.kitware.com/ubuntu jammy InRelease
Get:16 http://archive.ubuntu.com/ubuntu jammy-updates/multiverse amd64 Packages [53.3 kB]
Err:3 https://apt.kitware.com/ubuntu jammy InRelease
Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected. Could not handshake: Error in the certificate verification. [IP: 66.194.253.25 443]
Fetched 16.9 MB in 9s (1798 kB/s)
```
Others at my company have seen this too on both work and personal machines on different networks.
---
### Author:  [@simplequintessential](https://discourse.cmake.org/u/simplequintessential)
#### Post date: [December 11, 2024, 11:26pm UTC](https://discourse.cmake.org/t/kitware-apt-repo-down/13184/2 "2024-12-11T23:26:55Z")
It’s not down, but the HTTPS cert is for the wrong domain. The error message I get when viewing with Firefox is:
> # Warning: Potential Security Risk Ahead
>
> […]
>
> Websites prove their identity via certificates. Firefox does not trust this site because it uses a certificate that is not valid for `apt.kitware.com`. The certificate is only valid for the following names: `vtk.org`, `www.vtk.org` Error code: SSL\_ERROR\_BAD\_CERT\_DOMAIN
So the cert is for `vtk.org`, not `apt.kitware.com`. Someone goofed their Let’s Encrypt scripts I guess.
---
### Author:  [@Ryanf55](https://discourse.cmake.org/u/Ryanf55)
#### Post date: [December 12, 2024, 4:57am UTC](https://discourse.cmake.org/t/kitware-apt-repo-down/13184/3 "2024-12-12T04:57:41Z")
It’s back up now.