Hello, Unfortunately some serious security bugs have been discovered in the Xen hypervisor and fixes for these have now been pre-disclosed, with an embargo that ends at 1200Z on 9 June 2022. As a result we will need to apply these fixes and reboot everything before that time. We are likely to do this in the early hours of the morning UK time, on 7, 8 and 9 June. In the next few days individual emails will be sent out confirming to you which hour long maintenance window your services are in. The times will be in UTC; please note that UK is currently observing daylight savings and as such is currently at UTC+1. We expect the work to take between 15 and 30 minutes per bare metal host. If you have opted in to suspend and restore¹ then your VM will be suspended to storage and restored again after the host it is on is rebooted. Otherwise your VM will be cleanly shut down and booted again later. If you cannot tolerate the downtime then please contact support(a)bitfolk.com. We may be able to migrate² you to already-patched hardware before the maintenance is scheduled for your host. You can expect a few tens of seconds of pausing in that case. This process uses suspend&restore so has the same caveats. Cheers, Andy ¹ https://tools.bitfolk.com/wiki/Suspend_and_restore ² https://tools.bitfolk.com/wiki/Suspend_and_restore#Migration -- https://bitfolk.com/ -- No-nonsense VPS hosting