General
The Honourbound channel password was changed at 02:00 Game Time on January 1st.
Due to the nature of Blizzard's chat channels, it's important that everyone has updated the password in their GEM client around the same time. Your guild's Honourbound representatives or your guild leader should have posted or given you the new channel password.
Updating Your GEM
Updating your GEM client is fairly straightforward:
- Click on your GEM icon around your minimap or type "/gem toggle" to bring up GEM.
- Once GEM is opened, click the "Options" tab near the bottom of the window to bring up the program's options.
- In the channel list at the top of the "Options" screen, double-click on the entry for "honourbound". The channel name, password, alias, and slash command should now be in fields you can edit (see picture)
- Change the current password (BANANA in the picture) to the new password.
- Optionally, add/update your alias and slash command. The alias is what's printed to the left of messages coming from the channel, like "Guild:" appears before messages from your guild. The slash command is a shortcut to send information to the channel. In the picture, I use "a", so to send a message to the Honourbound channel, I type "/a This is a message on the Honourbound channel". Using a slash command allows you to embed clickable links in your messages, which using /1, /5 (or whatever your Honourbound channel number is) doesn't.
- When you're ready, click the "Update" button to accept the changes. You're sorted.

If you haven't already updated your password, in most cases you will be prompted for the new password when you return and try to join with the old password. If you run into problems, contact your THB rep or guild leader for advice.
Important #1: You still need to update the password in the GEM options or you'll be prompted every time you try to join.
Important #2: You must change the password for every character you have using the Honourbound channel. One change doesn't do them all.
Important #3: You should also be running a version of GEM higher than 2.26. That is, you should be using at least GEM 2.27 or GEM 2.28. The version number is at the top of the GEM window.
Troubleshooting
If the three "Important" notes above don't solve your problem, the following are known potential problems:
Problem: "GuildEventManager: You must add another channel before removing the last one" error when you try to "Update" because you only have one channel managed by GEM.
Solution: In the entry box (Step 4/5), enter a channel name of "junk", with no password, no alias, and no slash command. Click the "Add Button". Then follow the regular sequence of steps to update the Honourbound channel password. When you're done, click on "junk" in the channel list and click "Remove" to remove it.
If you have additional problems, talk to your THB representative or guild leader.
THB Guild Reps/Guild Leaders
Trial and error has discovered that, while you get a pop-up prompting you for a password if you haven't changed it in the options, it doesn't then update your options for you, so you still need to follow the GEM options update steps.