AutoCAD 2012 and AutoCAD LT 2012 Service Pack 1 Readme

Thank you for downloading AutoCAD® 2012 and AutoCAD LT® 2012 Service Pack 1

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


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

NOTE:You can also use Autodesk Exchange to install the Live Update Maintenance Patches, which will automatically show the correct Service Pack for your product.

32-bit Product
Service Pack
AutoCAD 2012 AutoCAD2012SP1.exe    
AutoCAD LT 2012 AutoCADLT2012SP1.exe

64-bit Product
Service Pack
AutoCAD 2012 AutoCAD2012SP1x64.exe
AutoCAD LT 2012 AutoCADLT2012SPx64.exe


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You can use this Service Pack 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 Service Pack 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 Service Pack.

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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:

Service Pack 1

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General Service Pack Updates

The following defects have been fixed:

3D Navigation Tools

3D Surface Modeling

Annotation Scaling




Display Drivers






Express Tools







OLE (Object Linking & Embedding)



Parametric Drawing

PDF Export

PDF Underlay






Sheet Set Manager


UI Enhancements

Visual Basic for Application

Visual Lisp

Visual Styles

External Reference


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The Service Pack brings back the Array dialog functionality by introducing a new ARRAYCLASSIC command.  It also introduces the option to restore legacy Snap behavior by controlling it through the new SNAPGRIDLEGACY system variable:

Creates copies of objects in a regularly spaced rectangular or polar array.

1 – Always snap the cursor to the grid
0 – Only snap the cursor to the grid when AutoCAD prompts to specify a point

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Before You Begin

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

Back Up Custom Files

It is recommended that you back up all custom CUIX, MNR, and MNL files before you apply this Service Pack.

Administrative Privileges

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

Network Deployment

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

About Your Product

After you install the Service Pack , updated 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 Service Pack :

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

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Apply This Service Pack to a Stand-Alone Installation

Follow these instructions to install this Service Pack on a single computer.

  1. Download the Service Pack 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 Service Pack and double-click the executable (EXE) file.

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Apply This Service Pack Through a Local Network

You can use InfoCenter to apply this Service Pack 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 Service Pack 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 Service Pack.

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

The patch (Service Pack ) 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 Service Pack 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, open and configure the deployment in the product configuration page, click Add to find the Service Pack extracted in Step 2. Notice that the Service Pack has been added in the Include Service Pack(s) from local drive or local network box. Close and return to the product list.
  8. Follow the instructions in the Deployment wizard to complete the Service Pack deployment.

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Uninstall This Service Pack

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 Service Pack 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 Service Pack 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 ©2011 Autodesk, Inc.