# Upgrade Script Netrunner 17 -\> Ubuntu Xenial (16.04 LTS) base

**URL:** <https://support.blue-systems.com/t/upgrade-script-netrunner-17-ubuntu-xenial-16-04-lts-base/4101>\
**Category:** Netrunner 17\
**Created:** [October 10, 2016, 1:10am UTC](https://support.blue-systems.com/t/upgrade-script-netrunner-17-ubuntu-xenial-16-04-lts-base/4101 "2016-10-10T01:10:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mark\_Spruce](https://support.blue-systems.com/letter_avatar/mark_spruce/32/6_449c533f586939b6e5f246632a46421f.png) [@Mark\_Spruce](https://support.blue-systems.com/u/Mark_Spruce)\
**Post date:** [October 10, 2016, 1:10am UTC](https://support.blue-systems.com/t/upgrade-script-netrunner-17-ubuntu-xenial-16-04-lts-base/4101/1 "2016-10-10T01:10:32Z")

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I get this error when trying to update the Package Installer:

The repository ‘[http://ppa.launchpad.net/n-muench/programs-ppa/ubuntu](http://ppa.launchpad.net/n-muench/programs-ppa/ubuntu) xenial Release’ does not have a Release file.Data from such a repository can’t be authenticated and is therefore potentially dangerous to use.See apt-secure(8) manpage for repository creation and user configuration details.Failed to fetch [http://ppa.launchpad.net/n-muench/programs-ppa/ubuntu/dists/xenial/main/binary-amd64/Packages](http://ppa.launchpad.net/n-muench/programs-ppa/ubuntu/dists/xenial/main/binary-amd64/Packages) 404 Not FoundSome index files failed to download. They have been ignored, or old ones used instead.

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**Author:** ![leszek](https://support.blue-systems.com/user_avatar/support.blue-systems.com/leszek/32/13_2.png) [@leszek](https://support.blue-systems.com/u/leszek)\
**Post date:** [October 10, 2016, 6:52am UTC](https://support.blue-systems.com/t/upgrade-script-netrunner-17-ubuntu-xenial-16-04-lts-base/4101/2 "2016-10-10T06:52:33Z")

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This seems to be a third party ppa that you added to Netrunner 17 and it isn’t releasing any software for xenial.  
I advise deactivating it.

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<div class="post-metadata">

**Author:** ![Mark\_Spruce](https://support.blue-systems.com/letter_avatar/mark_spruce/32/6_449c533f586939b6e5f246632a46421f.png) [@Mark\_Spruce](https://support.blue-systems.com/u/Mark_Spruce)\
**Post date:** [October 10, 2016, 12:13pm UTC](https://support.blue-systems.com/t/upgrade-script-netrunner-17-ubuntu-xenial-16-04-lts-base/4101/3 "2016-10-10T12:13:33Z")

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I have thank you