CAD tip # 6066:

Question

CAD
% platform category

AutoCAD freezes or has very slow startup.

During the application launch, AutoCAD practically freezes and doesn't paint the toolbars.

On a off-line computer (not connected to the Internet), this may be caused by the security communication.

Start Internet Explorer and go to Tools > Internet Options > Advanced tab > Settings > Security. In this section, clear the Publisher's Certificate Revocation check box. Exit by OK.

Now restart AutoCAD.

ACAD2009ACAD2008ACAD2005

* CAD

4.4.2008 36645×

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applies to: AutoCAD 2009 · AutoCAD 2008 · AutoCAD 2005 ·

See also:
Tip 13907:	Low performance when editing blocks in AutoCAD 2024.
Tip 13414:	Performance analyzer in AutoCAD 2023.
Tip 12951:	How to disable DirectX 12 in AutoCAD 2022/2023/2024?
Tip 12701:	What is the maximum length of a list in AutoCAD VisualLISP?
Tip 12448:	Pan view (change view target) in multiple viewports of a layout.

Selected tip: A partially clipped xref has completely disappeared.

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