Windows 64-bit
KB2984972 May Cause Problems with 32-bit App-V 4.6 Applications Using splwow64.exe to Print on 64-bit Windows 7 Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Wednesday, October 29, 2014 6:24pm
On 64-Bit Windows splwow64.exe is automatically used to interface 32-bit applications with 64-bit print drivers as part of the overall WOW64 subsystem.  Recently we applied KB2984972 and printing stopped working on most 32-bit App-V packages.
 
Server 2003 Migration Gotcha: 32-bit Desktop Applications on Citrix / RDS Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Wednesday, July 16, 2014 3:28pm

It is never ceases to amaze me how many application compatibility issues I diagnose that come down to challenges running 32-bit software on 64-bit Windows!  Flexera is sounding the same drum beat as the primary application compatibility concern when migrating off of Server 2003 and I have to say I agree.

 
WOW64 - A Comprehensive Reference Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Monday, November 18, 2013 2:34pm
Just what is WOW64?  As alluded to by the name, you can guess it has something to do with Windows 64-bit.  WOW64 stands for Windows on Windows 64.  It is a clever set of "tricks" that 64-bit Windows plays on 32-bit Software to make it feel right at home.  We have assembled the most comprehensive list of references (folders, registry, variables, etc) for Windows 64-bit.
 
What is splwow64 and AppHang Waiting on Application Name: splwow64.exe Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Thursday, October 11, 2012 12:00am

splwow64.exe is the printing subsystem for 32-bit applications. All print drivers on Windows 64-bit must be 64-bit.

 
Remediation of VBA Code That Runs Under 64-bit MS Office Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Thursday, October 4, 2012 11:00pm
Just like Microsoft, our strong advice on what edition of Office 2010 to run is "32-bit"! The simple reason is that vast majority of the thousands of MS Office plug-ins are only available in 32-bit versions and probably will be for some time to come. On top of this reason is the need to evaluate all your VBA code to see if it needs some minor modifications to run on 64-bit. If you are planning on running 64-bit office, read on for links to help you ensure the compatibility of your existing VBA code (whether written by you or part of a third-party plug-in).
 
Fixing "RegSvr32 The module failed to load. The specified module could not be found." on Windows 64-bit Print E-mail
Windows 64-bit
Written by Darwin Sanoy   
Friday, September 28, 2012 4:16am

So you are preparing your first Windows 64-bit image or just dutifully customizing your own machine.  You copy your traditional set of DLLs to the System32 folder and execute regsrv32.exe against them.  To your horror you receive the error “RegSvr32  The module some.dll failed to load.  Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files.  The specified module could not be found.”  Has your machine gone insane?  The file is plainly there in the System32 folder.  Let’s put it under the microscope.