Error: HP Universal Printing | Invalid Address when using the Hewlett-Packard Universal Printer Drivers with Microsoft Application Virtualization

To allow App-V clients to print to HP UPD printers use the following steps:

1. Upgrade the client to App-V 4.6 SP1 or greater.  This is required as it includes several necessary fixes.
2. Open Regedit and navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions

On 64-bit machines, this will be located at:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions

3. Note the highest numbered REG_SZ value in the list of ObjExclusions.  In this example, we will assume that the highest number is 93.  Increment this number by 1 and add the a new REG_SZ value with this name (i.e. REG_SZ, name: 94).  Double-click on the value and enter the value data Global\*.
4. Repeat this process by again incrementing the number and adding value data *HPZ*

 For example, add values 94 and 95 where the highest ObjExclusions value is 93:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions]
"0"="SFT-"

"1"="SWPLAY"

<SNIP>

"93"="FntCache*"

94"="Global\\* "
"95"="*HPZ* "