AutoCAD 2011 and AutoCAD LT 2011 Update 1 Readme

Thank you for downloading AutoCAD® 2011 and AutoCAD LT® 2011 Update 1.

This readme contains the latest information regarding the installation and use of this update. It is strongly recommended that you read this entire document before you apply this update to your product. For reference, you should save this document to your hard drive or print a copy.


You can apply this update to the following Autodesk products running on all supported operating systems and languages. Be sure to install the correct update for your software.

You can also use Communication Center to install the Live Update Maintenance Patches, which will automatically show the correct update for your product.

32-bit Product
AutoCAD 2011 AutoCAD2011Update1.exe
AutoCAD LT 2011 AutoCADLT2011Update1.exe

64-bit Product
AutoCAD 2011 AutoCAD2011Update1x64.exe
AutoCAD LT 2011 AutoCADLT2011Update1x64.exe


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You can use this update with the following operating systems below.

Service Pack 2 (SP2) and Service Pack 3 (SP3) of the following:

Service Pack 1 (SP1) and Service Pack 2 (SP2) of the following:

The following Windows® 7 operating systems:

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When you apply this update while running AutoCAD or AutoCAD LT, it is recommended that you do not click the "Automatically close applications and attempt to restart them after setup is complete" option. Instead, close AutoCAD or AutoCAD LT manually, and press "Ignore" at the prompt. It is also recommended that you reboot your system after installing the update.

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Problems Reported with the Customer Error Reporting Utility

As a result of detailed information from customers who used the Customer Error Reporting Utility, a number of problems were identified and fixed. Updates have been made in the following commands and features:


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General Updates

The following defects have been fixed:


2D Display

3D Cache

3D Modeling

3D Navigation Tools

Annotation Scaling



Command Line

Customer Involvement Program



DGN Support


Display Acceleration

Display Drivers


External References

Graphic System








Object DBX

OLE (Object Linking & Embedding)



Partial Open

PDF Export


Raster Design


Section & Flatten

Selection Highlighting


Visual Lisp

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Before You Begin

As you prepare to install this update, keep the following in mind:

Back Up Custom Files

It is recommended that you back up all custom CUI, MNR, and MNL files before you apply this update.

Administrative Privileges

During installation, you will be prompted for the original installation media or a network image. In order to apply this update, you must have administrative privileges to install and uninstall products.

Network Deployment

Administrators can deploy this update over a network using the Deployment Wizard.

About Your Product

After you install, product information displays in the About dialog box.


After you install, it is recommended to reboot your system even if not prompted.


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About Windows Command Line Switches

The following Microsoft Windows command line switches are built into this update:

Instructions about how to use the /e command line switch are included in the installation procedures that follow.

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Apply This Update to a Stand-Alone Installation

Follow these instructions to install this update on a single computer.

  1. Download the update and save it to any folder.
  2. If required, insert the product media (for example, the AutoCAD installation disc).
  3. Find the folder where you saved the update and double-click the executable (EXE) file.

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Apply This Update Through a Local Network

You can use InfoCenter to apply this update through your local network. Detailed instructions on how to set up patching through your local network are listed in the InfoCenter tab of the CAD Manager Control Utility Help.

Note: You can install the CAD Manager Control Utility from the product installation media. Select Install Tools and Utilities and then select Autodesk CAD Manager Tools.

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Apply This Update to a Network Administrative Image

The following distribution method applies only to administrative images created with the Deployment Wizard. After you complete these procedures, subsequent deployments of your product will include this update.

In all cases, append this update to the deployment. The only time it is appropriate to merge an update is if you intend to distribute the deployment through a group policy object.

The patch (update) file that you download contains an MSP (Microsoft Patch) file, which you extract from the executable file using the /e (extract) switch. For an example of the syntax, see step 2, below.

  1. From the Autodesk Product Support website, download the update EXE file to your local computer.
  2. On the Start menu (Windows), click Run. Enter the following information and click OK.

    <local_drive:>\<patch_name> /e <local_drive:>\< patch_name>.msp

  3. Insert the Autodesk media and launch setup.exe.
  4. Select Create Deployments. Click Next.
  5. On the Begin Deployment page, in the Specify the Deployment Location box, enter the shared network location where you would like to create an administrative image, or click Browse to find a location. Users install the product from this location.
  6. In the Specify a Deployment Name box, enter the name for your deployment.
  7. Continue through the Deployment wizard, and click Configure when allowed. On the Include Service Packs page, click Browse to find the update extracted in Step 2. Notice that the update has been added in the Service Packs Included in this Deployment box. Click Configuration Complete.
  8. Follow the instructions in the Deployment wizard to complete the update deployment.

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Uninstall This Update

Note: This update cannot be uninstalled when the product is installed from a deployment (also called an administrative image) with a merged update.

Windows XP

  1. From the Start menu (Windows), click Settings > Control Panel.
  2. In Control Panel, click Add or Remove Programs.
  3. In the Add or Remove Programs window, select the Show Updates option.
  4. Find the appropriate update in the list of programs. Click Remove.

Windows Vista and Windows 7

  1. From the Start menu (Windows), click Control Panel.
  2. Click Programs.
  3. Click Programs and Features.
  4. In the Programs and Features window, in the left pane, click View Installed Updates.
  5. Find the appropriate update in the list of updates. Click Uninstall.


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Depending on the product and the type of installation, this service pack updates the following files:

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Copyright ©2010 Autodesk, Inc.