Monday, February 21, 2011

Error: Performance Tuner failed to update in AutoCAD Civil 3D 2011

When you attempted to update the driver database using the 3DCONFIG command, you received the following error message:
Performance Tuner failed to update. Please check your network connection and make sure you have write permission to the file.
When you use the "Check for Updates" feature in the 3DCONFIG command, if a newer version of the Certified Hardware List is available, it is downloaded and a local XML file is updated.

If this file is set to read-only, or if you don't have the user permissions to save changes to this file, the error can occur.
To resolve this error
1. Using Windows Explorer, navigate to the following file:

Microsoft XP

C:\Documents and Settings\All Users\Application Data\Autodesk\\Rxxx\\PTXML\AdskHwCertificationDatabase.xml

For example:

C:\Documents and Settings\All Users\Application Data\Autodesk\AutoCAD 2011\R18.1\enu\PTXML\AdskHwCertificationDatabase.xml

Microsoft Vista/Windows 7


For example:

C:\ProgramData\Autodesk\AutoCAD 2011\R18.1\enu\PTXML\AdskHwCertificationDatabase.xml

2. Right-click the file. Click Properties.
3. In the File Properties dialog box, clear the Read-only check box.
If this does not resolve the issue, log onto the machine as local Administrator and attempt to update the database again.


  1. I am experiencing this error in CAD 2012, and I followed this very solution to try and resolve the problem. Unfortunately, it didn't work: the aforementioned file was not checked as read-only, and I am the system Administrator (I've checked and double-checked both of these), so neither of these solutions worked.....

    Any ideas?


  2. Two things to check, make sure that the folder is not set to "Read-Only" and then you may have to manually set the permissions on the file to allow all groups "Full Control" of the .xml file.