I'm working at a research institute. We have a domain managed AD user account and the typical proxy that allows us to log into our institute's user account on whatever computer we are working and access both the internet as well as internal services. For our "personal" computers we also own a local administrative account. If we switch to another machine, an IT administrator would have to log into their account and create such an account with admin privileges for the employee.
Due to moving to home office I had to take my machines with me - one notebook for development and research and another one for accessing sensitive data, managing projects, time etc.
After moving home I discovered that even with the proxy off various applications (Epic Games Launcher for Unreal Engine, VS Code, Anaconda etc.) are unable to connect to the internet. Web browser works and so does pinging. Our group IT admin suggested resetting the network since he doesn't know what could have gone wrong. This resulted in a major screw up where I loss access to my domain-managed account (not listed even as a user name, which probably means that some policy or service got reset). I need this account since I don't want to be using the admin account unless I need to install some tool for my development and research.
Upon logging into the admin account I found out that there the same issue is present. I even made a new basic user account where the same error could be observed. I've always used Anaconda and Git Bash with user-specific configuration (no global config). Anaconda is even installed just for the specific user (to prevent requirement for admin priveleges). I don't even have access to our external GitLab Server, which is exposed to the outside!
One thing I tried was to install (just for testing purposes) a client that is provided by the institute for establishing both a network and VPN connection. This client is used alongside a small embedded computer that uses a security card with a PIN. According to the admin this is to be used only with my other business notebook for accessing sensitive data. After I finished the setup I discovered that at least using my admin account all of the apps I had problem with are able to connect to the internet.
Now to the final attempt to fix the situation. Normally when a new computer arrives from the IT department we just need to attach it to the internal network of the institute (physically, not possible remotely!). Once this is done a user is able to log into their institute account after a short amount of time looking at messages about setting up group policies and so on. The problem is that now even this is not working. I went to the institute specifically to attach my notebook to the network but I am still unable to log in with my user account (tells me unknown user or incorrect password). When switching to the admin account I can see that the network adapter interprets the connection as a private network. On the other business notebook (where VPN etc. is running and everything work just fine) I can see that the network is listed as domain network.
I read quite a bit but I am not really familiar with the topic. Even tried checking some registry keys (e.g. NetworkList Profiles where Category was set to Private).
Needless to say I am not getting any support from the admin except threats he will revoke my admin rights on that notebook, which btw. I am perfectly fine but I doubt he would want to install this and that tool for me ever so often. My other option - which I am going to do as soon as possible - is to wipe everything and install Linux. All Linux systems owned by employees are marked as managed by the respective employee and the IT administration doesn't want to deal with any of it.
The basic question here would be how do I fix the situation on my own without involving the IT administrator.
