apt get update fails after VM snapshot reset

After you reset your VM to a snapshot including RAM you might have to time from the VM snapshot still active. So your apt get using https might fail due to the wrong time: "*update source* is not valid yet (invalid for another 46min 26s)".

Example:

[11:14:04] root@linubu22nf435:~#
[11:14:07] root@linubu22nf435:~# date
Tue 31 Oct 2023 11:14:08 PM CET
[11:14:08] root@linubu22nf435:~#
[11:14:08] root@linubu22nf435:~# apt update && apt install -y software-properties-common
Hit:1 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease
Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:4 http://archive.ubuntu.com/ubuntu focal-security InRelease
Ign:5 https://download.webmin.com/download/repository sarge InRelease
Get:6 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Hit:7 https://download.webmin.com/download/repository sarge Release
Reading package lists... Done
E: Release file for http://archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease is not valid yet (invalid for another 46min 26s). Updates for this repository will not be applied.
[11:14:20] root@linubu22nf435:~#
[11:14:23] root@linubu22nf435:~# sudo hwclock --hctosys
[11:15:06] root@linubu22nf435:~#
[12:37:53] root@linubu22nf435:~# date
Tue 31 Oct 2023 12:38:27 PM CET
[12:38:27] root@linubu22nf435:~#
[12:38:28] root@linubu22nf435:~#
 

Using sudo hwclock --hctosys you update your time and apt get and apt install with https should work fine again.

Microsoft Office access does not work to WebDav shares

Since Microsoft released a patch for Windows in Q4-2023, access to WebDav shares which use basic authentication is blocked:

Example

Office Error WebDav sign-in method

Example with ionos webdav share:

English: "Microsoft Office has blocked access to https://webdav.hidrive.ionos.com because the source uses a sign-in method that may be unsecure

German: "Microsoft Office hat den Zugriff auf https://webdav.hidrive.ionos.com blockiert, da die Quelle eine Anmeldemethode verwendet, die möglicherweise unsicher ist."

 

Solution

To fix this, you have to add the following registry key to Windows 11 with the URL to your destination (in this example it is webdav.hidrive.ionos.com):

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity]
"basichostallowlist"="webdav.hidrive.ionos.com" 

 

New proxmox VM does not boot

When adding a new VM (in this example the nextcloud appliance VM from https://www.hanssonit.se/nextcloud-vm/ ) to an old version of proxmox ...