OS X 10.9 Epson Printer – Enable Duplex Printing

Epson recently released a driver update for OS X 10.9 Mavericks which automatically shows up within the Apps/Software update menu. Like most users my wife dutifully added the update which then removed her duplex printing settings.  Screen Shot 2014-01-26 at 1.50.30 PM
Notice the “Two-Sided” printing option is off and grayed out.
While I’m sure this was unintended it did pose a real problem. After reinstalling drivers and the printer itself several times I found the following fix.

1. Select “Printer Features” from the pull down menu (Hint: Click Layout)
2. From the “Feature Set” pull down menu select “General 6”

Screen Shot 2014-01-26 at 1.53.13 PM

You’ll notice that buried within this sub menu is the option we’re looking for.

3. Select 2-Sided Printing ON
4. In order to ensure you never have to set this option again save your new settings.
Screen Shot 2014-01-26 at 1.58.41 PM

You can see in this screen capture I’ve already saved mine as “Duplex!”

Fix OS X Mavericks Continuously Prompting for KeyChain Password

Symptom: Upon login OS X Mavericks continuously prompts you for a Key chain password which does not match either your iCloud/iTunes credentials or your local login credentials.


* Go to Finder.
* On the Finder menu, click on “Go”, then on “Go to Folder”. A box should come up.
* On the box, type in “~/Library/Keychains/” and click on “Go”. It should lead you to the Keychains folder where you will find three items: (1) a folder with a name mixed with letters and numbers, (2) login.keychain, and (3) metadata.keychain.

* Delete the folder with a name mixed with letters and numbers.
* Restart your computer. Check to see if the problem has been solved.

Solution Source: http://forums.macrumors.com/showthread.php?t=1652089

Fix: Youtube buffering issue

Over the past two weeks I’ve noticed a continuous issue with loading youtube videos and having them endlessly buffer. Tonight I did some digging and found a quick fix!
The solution is pretty simple, and involves blocking a specific IP range associated with Verizon FIOS servers which are buffering Youtube traffic.  Since the IP may be different depending on your location I’ll go through the simple steps to identify the IP to block and the associated OS X command to run to block it.

1. Open a terminal window and type “traceroute youtube.com”
2. Note the first IP address which shows up outside of your network.  It should be the one which doesn’t start with 192.x.x.x
On my network the offending IP is:
l100.<your area>-vfttp-<some number>.verizon-gni.net (  19.260 ms  20.116 ms  18.862 ms
Also, note any entries which end in “alter.net” as these are Verizon FIOS servers.
3. Test loading a highdef youtube video.  Make sure to switch its resolution up to 1080p, and watch it buffer.
4. From the terminal window block the offending IP by running the following command
sudo ipfw add reject src-ip in
5. Confirm the IP is now blocked by running sudo ipfw list
Example output:
00100 reject ip from to any in
6. Refresh your browser by hitting F5 and reload the high def YouTube video.
Note, if this doesn’t work the blocked IP subnet can be removed using the following command:
sudo delete 00100 reject ip from to any in
If this doesn’t work you can also try blocking the IPs found within this post.

Citrix VDI – Configure Dynamic Home Directory Paths

Home directories are a necessary and very important evil when deploying VDI with Citrix. What is often overlooked is the impact of moving a users home directories and the associated hard coded updates which need to remediated post migration.

Post data migration all users require the following file to be updated: appsrv.ini

The appsrv.ini file has a static pointer for two file paths. The Cache location and the Citrix log file. In place of the default home directory path used by Citrix administrators should use the built in Environment Variable %HomePath% which ties the file locations to the users AD home directory value. This ensures that admins can perform updates either through scripts or GPO policies and not have to modify each users appsrv.ini file each time they perform a data migration.