Remote desktop connection fails with no error

Hi,

Method 1:

You may try configuring the computer to clean boot state and check if any of the third party program is interfering in the process. To configure the computer to clean boot follow the link given below.

 How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.microsoft.com/kb/929135

Note: After you have finished troubleshooting, follow step 7 in the article to boot to normal startup.

Method 2:

Also, temporarily disable the Security software and Firewall settings and check if that helps. Follow the links for more information.

Disable antivirus software

http://windows.microsoft.com/en-US/windows-vista/Disable-antivirus-software

Firewall: frequently asked questions

http://windows.microsoft.com/en-US/windows-vista/Firewall-frequently-asked-questions

Understanding Windows Firewall settings

http://windows.microsoft.com/en-US/windows-vista/Understanding-Windows-Firewall-settings

Allow a program to communicate through Windows Firewall

http://windows.microsoft.com/en-US/windows-vista/Allow-a-program-to-communicate-through-Windows-Firewall

Note: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you should not disable your antivirus software. If you do have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you are connected to the Internet or a network during the time your antivirus software is disabled, your computer is vulnerable to attacks.

Method 3:

Since the problem started after unsuccessful installation of SP2, it might be the corrupt installation files of SP2. You may also try a system restore and check if that helps.

Note: When you perform System Restore to restore the computer to previous state, programs and updates you installed are removed.

For more information follow the link given below.

http://windows.microsoft.com/en-US/windows-vista/System-Restore-frequently-asked-questions

Hope this information is helpful.

Amrita M

Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.

I have already tried all of these methods

Firewall\Antivirus settings do not make any difference

Attempting a system restore fails - it looks like the failed upgrade has corrupted the backup as well

I think I have found the cause but I have no idea how to fix it

The following error is being logged under security

Code integrity determined that the image hash of a file is not valid.  The file could be corrupt due to unauthorized modification or the invalid hash could indicate a potential disk device error.

File Name: \Device\HarddiskVolume1\Windows\System32\rdpdd.dll

How do i fix this?

Hi,

You may use the System File Checker tool (SFC.exe) to replace the file and check if that helps. To do this, follow the link given below.

How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7 

http://support.microsoft.com/kb/929833

Hope this information is helpful.

Amrita M

Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.