How To Back Up The Google Authenticator App

 https://passwordbits.com/how-to-back-up-the-google-authenticator-app

Long story short, you would tell the Google Authenticator app to export the various accounts managed by it. The process will create one or more QR codes, depending on how many 2FA accounts you try to export. Each QR code encompasses up to ten 2FA accounts, meaning if you have 11 accounts, the process will create two QR codes. The resulting QR codes look more "dense" than a typical QR code. I  suspect these QR codes have more complex information. You will scan these QR codes to recreate the 2FA accounts on a different smart phone such as your new replacement phone.

Useful Shortcuts in Managing Windows

There are a few commands that are used often by technicians to manage Windows. Things like creating and deleting user accounts. The following commands would be typed in the Search Bar which can be open by hitting the Windows key + R.

sysdm.cpl





lusrmgr.msc

certmgr.msc

This lists all the certificates used by Windows to authenticate to one online resources. In some cases, certificates are used in lieu of passwords. So if your Windows machine cannot authenticate to some network resource that it could previously, the culprit could simply be a stale, expired, or corrupted certificate. Deleting the existing certificates forces Windows to get new ones from the network resources.

Go to Trusted Root Certification, then Certificates. There, look for any expired certificates and delete them. 

How to Remote Connect to a Windows PC From a Raspberry Pi

Remmina is the program that you would use to do this on the Pi, but it needs some dependencies to be able to work on Raspbian OS. There are a few packages that have these dependencies. The most popular is xrdp because it is built specifically for the RDP protocol. Snap is another but it has a larger footprint that may not be suitable for lower-end Pi devices. So the 3 steps to install Remmina is:Update and upgrade the 

1. Raspbian OS
2. Get the dependencies
3. Install Remmina

https://www.makeuseof.com/tag/remote-connect-windows-pc-raspberry-pi/


https://snapcraft.io/install/remmina/raspbian

You can use this to remote to a Proxmox VE server that hosts multiple Windows guest VMs. This way, you can have an office or a computer lab that does not need to have multiple electricity-sapping full blown Windows stations, but low-cost low-power Raspberry Pi devices including these that have the Pi built into the keyboard.

https://www.raspberrypi.com/products/raspberry-pi-400

HP printer setup (Wi-Fi Direct)

https://support.hp.com/us-en/document/ish_1841315-1637332-16