Public bug reported:
**Describe the bug**
When uninstalling Unbound from Ubuntu 24 Noble, with the command: `apt remove
unbound` will leave folders on Linux, which prevent a reinstall, which then
creates a severe issue. When I reinstall, the deb unpacking hangs at 60%, locks
my console and is impossible to escape, leading to corrupt packages and even
`systemd` failures. Multiple times, in multiple tries. Standard procedures,
configure deb, unlock threads, won't work. Even rebooting will even fail to
start up apache2. This was a severe failure.
The problem arises as a post-invocation script run by `systemd`, I
think? When I stop that post-invocation, the installer completes but
then misses the post-invocation. So it won't fully install...
Mitigation:
Remove everything Unbound left behind, including `Unboud user`. Use
`grep` to find it.
**To reproduce**
Steps to reproduce the behavior:
As described above.
**Expected behavior**
Reinstalling should be possible, not freezing.
**System:**
- Unbound version: Latest build for Ubuntu. 1.19.2
- OS: Ubuntu 24. Linux: 6.8.0-101-generic 101-Ubuntu SMP PREEMPT_DYNAMIC Mon
Feb 9 10:15:05 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux
- `unbound -V` output:
```
Version 1.19.2
Configure line: --build=x86_64-linux-gnu --prefix=/usr
--includedir=${prefix}/include --mandir=${prefix}/share/man
--infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var
--disable-option-checking --disable-silent-rules
--libdir=${prefix}/lib/x86_64-linux-gnu --runstatedir=/run
--disable-maintainer-mode --disable-dependency-tracking --with-pythonmodule
--with-pyunbound --enable-subnet --enable-dnstap --enable-systemd
--enable-cachedb --with-libhiredis --with-libnghttp2 --with-chroot-dir=
--with-dnstap-socket-path=/run/dnstap.sock --disable-rpath
--with-pidfile=/run/unbound.pid --with-libevent --enable-tfo-client
--with-rootkey-file=/usr/share/dns/root.key --enable-tfo-server
Linked libs: libevent 2.1.12-stable (it uses epoll), OpenSSL 3.0.13 30 Jan 2024
Linked modules: dns64 python cachedb subnetcache respip validator iterator
TCP Fastopen feature available
```
**Additional information**
None.
** Affects: unbound (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2143558
Title:
Uninstalling latest Unbound, leads to severe deb package failure.
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