Cisco Phone Designer in Windows 7 won't start

Unanswered Question
Jul 7th, 2010
User Badges:

Dear all:

     I've been working with CUCM for a while now, but I just downloaded the Cisco Phone Designer in my laptop to see how it works, and it turns out it won't start at all in my laptop. The message it show says "Phone Designer has encountered an issue that requires the application to be closed, if the problem persists, please contact your administrator", and a list of possible problems that I could have.

     I've read the installation guide, and tried the workaround for Vista and XP that is documented there (about the "Format" in the Region and Languajes option in windows) and it didn't work.

     I'm running Windows 7 Enterprise 64-bit (6.1, Build 7600) with 4GB in RAM.

I've attached an image of the error, hope this gives you more information.

Thank you for your time and attention

Allan Mancera

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (27 ratings)
phamvinhdat Wed, 07/07/2010 - 17:50
User Badges:
  • Bronze, 100 points or more

Have you tried to run application with Previous Windows setting. You can check the compatibility mode under properties setting.


allan.mancera Sun, 07/11/2010 - 12:42
User Badges:

yes phamvinhdat, I've tried to do the compatibility mode with XP and Vista, with and without Service Packs, and it doesn't work. Thanks for the idea though.

Best regards

Ing. Allan O. Mancera

d.gavin Thu, 07/29/2010 - 08:24
User Badges:

Did you ever get a resolution to this?  I have the same issue occurring.



allan.mancera Thu, 07/29/2010 - 08:41
User Badges:


     Actually I didn't get a solution, a temporary workaround was to install a virtual machine with Win XP, and work from there.

hope someone has come up with a solution for this.

best regards

wirickg Fri, 09/10/2010 - 11:48
User Badges:

I have two users both running Windows 7 64-bit version that I just gave Phone Designer to for trial. Both received the same error reported in this

thread. We were able to install Phone Designer in a VM session on one of the two machines and got it to work just fine. This is fine and dandy for a group of IT guys to do but would not, of course, be practical for an enterprise. I guess a good question in this case is whether or not this is an issue with Windows 7 in general or the fact that the reported issues have been on a 64-bit version of the OS. Has anyone tried installing and running Phone Designer on a 32-bit version of Win7?

sveisen Fri, 10/15/2010 - 00:35
User Badges:

Yesterday I installed PhoneDesigner 713SR2 on a Win 7 32-bit and it worked fine. I tried it on my own win 7 64-bit today, but it will not start.

redriverfcu Fri, 02/18/2011 - 07:56
User Badges:

It seems illogical to me for Cisco to continue to take a stance of not supporting the Phone Designer for the Win7 64bit OS.  Windows 7 is a very good OS and it will be in heavy useage very soon.  There is a strong industry push to 64bit systems and this holdout by Cisco seems odd to me.

jeremy.hicks Wed, 07/20/2011 - 10:13
User Badges:

i got phone designer working on 64bit win7 by using corflags.exe to force windows to run it in 32bit mode.

you can find corflags in:

Microsoft Windows 200X SDK   (C:\Program Files\Microsoft SDKs\Windows\v7.0\Bin\x64>)  (note: this path is from a Windows 7 SDK)

Visual Studio 2005 and above  (C:\Program Files\Microsoft Visual Studio\SDK\v 2.0\Bin)

or just find a download online if you don't have either.

then just run:

corflags "

C:\Program Files (x86)\Cisco Systems\Cisco Unified Phone Application\phonedesigner.exe" /32BIT+ /force

Zack Lessin Thu, 04/26/2012 - 13:14
User Badges:

Worked Perfectly for me. Thanks Imthiyas.

Would be pretty cool if Cisco put out a natively 64-bit compatible version.


Muthurani Lavan... Sun, 04/29/2012 - 01:03
User Badges:
  • Gold, 750 points or more

Hi Imthiyas Khan

Its works perfectly ! Thanks for sharing.


Lavanya - Technical Community Manager

Zack Lessin Sun, 04/29/2012 - 07:20
User Badges:

Does Cisco have any plans to update this application for 64-bit support? Seems like Win 7 Enterprise 64-bit has been moving into the OS of choice (even in large organizations) for the last few years.


Imthiyas Khan K I Mon, 04/16/2012 - 01:40
User Badges:
  • Bronze, 100 points or more

If you have a 64 bit machine and want to run a .NET application that  only works with the 32 bit CLR you would have to make changes to the  .NET framework on your machine

Set the .NET framework to load the CLR in WOW mode through this command

Open up command prompt and type this command

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe SetWow

Now you should be able to run apps that use only the .NET 32 bit CLR.

To revert back to the default 64 bit framework run

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe Set64

Please rate, if it really helps you !!!

johaas123 Wed, 09/12/2012 - 06:52
User Badges:

Thank you Imthiyas, worked for me!

You made my day ;-)

Nelson Sievers Wed, 01/16/2013 - 09:12
User Badges:


Your solution worked perfectly for me as I have just upgraded my company laptop to Win 7.  One caveat: if you cannot use the Run window due to policy restriction,, open the command prompt by right clicking and selecting , "Run as administrator".  I am disappointed that Cisco hasn't addressed this.



mariagallegos Thu, 10/31/2013 - 09:13
User Badges:

Thank you for sharing it worked! Now if I could only find something for the IP phone Address Book Sychronizer I was hoping that one run too but it didnt. 

kchiang951 Tue, 02/25/2014 - 05:15
User Badges:

Thank you Imthiyas!  I couldn't get it work any other way but your workaround worked perfectly!

k6lw Thu, 08/08/2013 - 11:50
User Badges:

I had designer working when I first received my Win 7 64 machine. I got it to work using

the Ldr64.exe SetWow command as an administrator at a command prompt.


there have been numerous "patches" to WIN 7 issued in the mean time, and Phone designer is no longer working.

It won't even launch.

If attempt to run it from Windows XP Mode - Windows Virtual PC, it stll won't launch. Throws a "Phone Designer has encountered a problem".

I downloaded 7.1(3)SR2 which is working in the XP virtual mode. It also is talking again to the CMs. I used the software to generate a bunch of background images for our 7962 sets and then uploaded the generated images to the TFTP servers so that others could access them via the phones. It's a shame the software doesn't operate natively in Win 7 / 8 so that the "less technical" users could access the software.

CISCO, Please spend some time and correct these issues. At the very least the program should run "NATIVELY" in Win 7 32 AND 64 and should also work in Win 8.  Really make everyone happy and create versions for Linux, Android,  iOS, and Win RT.

Edmar Carvalho Tue, 05/16/2017 - 08:20
User Badges:

Hi Allan,

try this 

Getting Cisco Phone Designer working on x64 Windows 7

Have to give credit to the guys on the cisco forums for this tip.  Cisco Phone designer doesn't support x64 Windows 7.  To get it to run:

  • Open up command prompt as administrator and type this command:
    • C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe SetWoW
  • Now you should be able to run apps that use only the .NET 32 bit CLR

  • To revert back to the default 64 bit framework run
    • C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe Set64


This Discussion