I have two domains with a 1 way trust
Domain A
Domain B
The users are located in Domain A
The octopus server is installed Domain B
There is a 1 way trust where Domain B trusts Domain A
B -> A
After many days of troubleshooting, here is how I got it to work
1.Change octopus auth to other domain
.\Octopus.Server.exe service --stop
.\Octopus.Server.exe configure --activeDirectoryContainer "DC=example,DC=com"
.\Octopus.Server.exe service --start
Its best to be as specific as possible when setting the activeDirectoryContainer, however if you are too specific, you will find you wont be able to search for groups (see Add Users by active directory group)
.\Octopus.Server.exe configure --activeDirectoryContainer "OU=foobar,DC=example,DC=com"
2. Services.msc -> Change the user octopus runs as to be a user in the domain where you want to pull users from (Domain A in my case)
3. Grant full permissions to that user to C:\Octopus
4. Grant full permissions to that user to C:\Program Files \Octopus
5. If you are using SqlExpress, and windows authentication, you also need to make that service account a db_owner on the database (not sure this is required)
6. You may need to use the full domain when logging into the octopus web interface (e.g EXAMPLE.COM\myuser)
Hopefully this helps someone else who is having trouble getting octopus deploy working with 1 way domain trusts.