WINDOWS 7| COM Ports go unresponsive on Remote desktop connection

Hello we are experiencing a strange problem and let me explain in detail:
Problem:
We have a remote desktop connection from a PC (PC1) to remotely login and control PC2 which in turn has some hardware devices connected via COM Port of PC2. We observed that the Serial communication between the Hardware devices and the PC2 drops on some
occasions when we make a remote desktop connection to PC2 from another PC. Could anyone share some of your experiences? Has it been noticed before?
I will also take a look at the possible port conflicts but is there any other obvious reason for this to happen?
System Information:
OS: Windows 7 Professional
Regards
Sesha

Dear Dharmesh and Dear Hicham,
First of all thank you very much for your quick reponses.
Since it happens in a remote server environment I have asked our support personnel to check this settings. I will keep you updated as soon as I hear from them. In addition I would like to ask you one other question:
Since it does happen occasionally could you recommend me which types of logfiles(event logs etc.,) or information should be collected if it happens again? so we make sure it does not get overwritten?
Thank you and Best Regards
Sesha

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Hi,
Firstly, we need to refer to this article and configure the settings.
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http://windows.microsoft.com/en-us/windows7/allow-remote-desktop-connections-from-outside-your-home-network
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At home, I just upgraded from a Windows 7 Ultimate 32-bit desktop to a new Dell with Windows 7 Ultimate 64-bit OS. Remote Desktop Connection from my old home PC to my work PC worked great for years even after upgrading both to Windows 7 Ultimate. Now everytime I try to use Remote Desktop Connection (RDC) to connect into my work PC (with Windows Ultimate 7 32-bit) the RDC window will freeze after a new seconds of use. If I wait approx 3 minutes the RDC window will unfreeze for a few seconds before freezing again. If I minimize the RDC window on my home PC, I can continue to work because it's only the RDC window that is frozen. Here is everything I've tried already that has not helped:
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Hi,
Since it works in Safe Mode, I suspect this should be related to some conflicts, please try the methods in the following Knowledge Base article to have a check:
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Hi,
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So you have read this blog?
RDP connections might fail due to a problem with KB2621440 - MS12-020
Did you reinstalled the KB2621440?
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Why can’t I connect using Remote Desktop Connection?
Please take a check with those settings again.
Best regards
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I am a little lost now.. I have read again your title and your first post.. and they seem inconsistent.
In the title you state.
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Hi all.
Was hoping someone would be able to help me with an issue I'm having.
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Brandon
Windows Outreach Team- IT Pro
The Springboard Series on TechNet
Hi Brandon
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"If it's worth doing, it's worth overdoing" -- MythBusters

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The genius for Microsoft products an be found onthe Microsoft forums for their Mac software:
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Hello Fiona,
Congratulations on your new iPhone! You can sync information to your iPhone from your MacBook Pro using the Info tab in iTunes when your iPhone is connected. Use the steps in the following article:
iOS: Syncing your data with iTunes
http://support.apple.com/kb/ht1386
Thank you for using Apple Support Communities.
Best,
Sheila M.

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