This readme contains important information regarding the installation and contents of the Update.

Important: The AutoCAD 2018.1.1 Update contains all of the updates previously released for AutoCAD 2018.

AutoCAD Updates can be applied to AutoCAD installed as a standalone application and AutoCAD-based vertical products. You can install the AutoCAD update in addition to any applicable updates for your vertical products listed below.

After applying this patch, the Product Version in the About box will be listed as O.154.0.0 AutoCAD 2018.1.1 Update. If you use one of the vertical products, the Built On version will be listed as O.154.0.0 AutoCAD 2018.1.1 Update.

The following table summarizes the new features and enhancements provided in this Update. For detailed information, consult the AutoCAD 2018.1 Update Preview Guide.

Feature	New Feature or Feature Enhancement	Feature Comments
Xref Layer Property Enhancements	New Feature	To provide more flexibility for controlling xref overrides, the Layer Settings dialog box, which is accessed from the Layer Properties Manager, includes new controls for managing Xref layer properties. When the option to retain overrides to xref layer properties is turned on with the VISRETAIN system variable, you can now specify which xref layer properties that you want to reload. The various layer property options are stored in the registry as specified by the new VISRETAINMODE system variable. The Layer Properties Manager also includes a new status icon to indicate when a layer associated with an xref includes overrides. Primary commands and system variables: LAYER, VISRETAIN, VISRETAINMODE, XREFOVERRIDE
Views and Viewports	New Feature	You can now easily create, retrieve, and place model views together with automatically sized and scaled layout viewports onto the current layout. When selected, layout viewport objects display two additional grips, one for moving the viewport, and the other for setting the display scale from a list of commonly used scales. Primary commands and system variables: MVIEW, NEWVIEW
High resolution (4K) monitor support	Feature Enhancement	Support for high resolution monitors continues to be improved in the Update. More than 200 dialog boxes and other User Interface elements have been updated to ensure a quality viewing experience on high-resolution (4K) displays. For the best results, use the Windows 10 operating system and a compatible video card.
3D Graphics Performance	Feature Enhancement	The 3D graphics performance for the Wireframe, Realistic, and Shaded visual styles continues to increase depending on the content of the DWG files tested. For example, the median value for the frames-per-second performance in the six large benchmark models used increased by 37% in the Update as compared to AutoCAD 2018. Primary commands and system variables: 3DORBIT, ZOOM, PAN, VSCURRENT

As a result of the detailed information that we received from customers who used the Customer Error Reporting Utility, we were able to identify and fix several defects with the following results:

2018.0.1 Update

General

Occasional crashes when ending an AutoCAD session using specific API code no longer occur.

2018.0.2 Update

General

Occasional crashes when editing an undefined hatch pattern no longer occur.

Occasional crashes when opening certain DXF files no longer occur.

2018.1 Update

General

Occasional crashes when switching the visual style to 3D after using the PDFCLIP command no longer occur.

Occasional crashes when right-clicking the drawing from the Start tab no longer occur.

Occasional crashes when saving to the AutoCAD 2004/LT 2004 Drawing format or an earlier format no longer occur.

2018.1.1 Update

General

Occasional crashes when opening the block editor no longer occur.

Occasional crashes when selecting or creating a non-associative hatch no longer occur.

Occasional crashes when clicking the Insert View button on the ribbon in some drawings no longer occur.

Occasional crashes when modifying certain dimension styles no longer occur.

Occasional crashes when editing the grip of a spotlight in some drawings no longer occur.

Occasional crashes when opening DXF files containing Xrefs no longer occur.

2018.0.1 Update

Annotation

Publishing annotative multiline attributes no longer results in incorrect annotative scaling.

Font

PFB fonts can now be compiled successfully as SHX files.

PDF

The border of a mask is no longer plotted in PDFs when, from the Plot dialog box, PDF Options, Merge Control, the Lines Merge option is specified.

2018.0.2 Update

Block

Right-clicking in the Block Editor no longer displays an error message in the Command window.

Plot

Certain text styles are no longer upside down when printed to PDF.

Self-Intersecting wipeouts in a block will perform as expected when plotted.

General

A defect that would otherwise have caused the product subscription to expire on June 1st, 2017 with a pre-release product error message is fixed.

The ability to input values for the Material Editor Palette is restored.

Digitally signed AutoLISP files can be loaded as expected.

2018.1 Update

Linetype

The properties of complex linetypes are now supported by standards files (.dws).

General

AutoCAD no longer hangs on Windows 10 when copying objects between AutoCAD 2018 and AutoCAD 2017.

Crossing Window and Fence selection can select objects that are not on the current UCS XY plane.

The Digital Signature Warning dialog box does not display on every save or autosave operation.

Plot preview performance is improved on some drawings that previously were slower than expected.

2018.1.1 Update

Blocks

The attribute position of a block remains the same after editing the block.

PDF/Plot

PDF files plotted from certain drawings now display correctly in Adobe Reader.

Hatch patterns in PDF files are consistent with lineweight.

Raster images are plotted correctly when Shadeplot is set to the Rendered option.

General

The AEC property-set data in DWG files can be successfully exported to 3D DWF files.

Certain Pro/E files can now be successfully imported into AutoCAD.

We want to express our appreciation to all our customers who identified these issues and reported them to us. Your reports gave us the opportunity to improve the quality of the product. We also thank you for your continued business, and for your valuable feedback regarding this release.