Patch 1 installs right away. In future, it is possible some patches will apply to files that are in-use while the IDE is running. GetIt will handle those fine, by closing the IDE and installing.

Patches will only appear in the Welcome screen if the IDE can connect to the GetIt server. 10.4 uses the same GetIt-based installer for both online and offline (ISO) installations. If you installed from ISO, which is offline mode, you'll need to tell GetIt to look online for data rather than using the ISO image as its installation source. You can do this by running the following at a command line:

GetItCmd.exe -c=useonline

(Similarly, use -c=useoffline to go back offline.)

Installation instructions for Patch 1
The installation instructions for Patch 1 are therefore very simple:

Close all projects, or open the IDE if it's not open
Look for the patch notification on the Welcome page. Click it. Select the patch in the GetIt window and click Install.
Keep an eye out for any Windows UAC notifications in the taskbar, asking for permission to elevate GetIt. Sometimes they appear behind the IDE. Click the taskbar button for it if it doesn't appear on top of the IDE
After installation, the Welcome screen may not update (it doesn't ping servers often and so doesn't refresh after GetIt runs), but you should see an "up to date" message next time you open the IDE
If you installed via the offline ISO installer:

Run GetItCmd.exe -c=useonline and then follow the instructions above
Alternatively, the patch is available for download and installation the old-fashioned manual way here. We recommend installing via GetIt since it handles installation for you, and you can see which patches are installed by opening GetIt.

Only for V.I.P