Not really a bug, but I have recently finished organising our Domain Controller.

It was a server set up about 8 year ago by someone with zero experience with server OS.

I had to completely re-work every single group, GPO, User Account, Login script, shared drives and DHCP.

I have now solved 90% of re-occurring problems with our network.

Now they want me to do the same with our Digital Storefront...