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FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at 4048b9h!!

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Auto Desk Autocad LT FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at 4048b9h

Issue:

When you tried to launch AutoCAD, the following error message was displayed and the product would not run.

error message

Solution:

This error message indicates that the program installation has become corrupted. To correct the issue, the software needs to be reinstalled. This error occurs when certain files become locked during the uninstall/reinstall process. To reinstall AutoCAD correctly:

  1. Disable Digital Signatures:
    • On the Windows Start menu, enter acsignopt in the Search programs and files field and press Enter.
    • Clear the Validate Digital Signatures and Display Special Icons option.

solution

2: Completely remove Autodesk software and reinstall.

 

 

 

Auto Desk Desktop Subscription Licensing Error: “Establish an Internet connection to continue!!

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Subscription Licensing Error: “Establish an Internet connection to continue”

Issue:

When you try to start the program, the following error is displayed: 

Establish an Internet connection to continue
The Auto desk license server cannot be found.  This problem can be caused by a variety of issues, including:

  • Internet connectivity has been lost.
  • The Auto desk license server is temporarily unavailable.

Causes:

  • Security vulnerability that requires a licensing hotfix
  • Network connectivity blocked by a proxy server
  • Trovi or WAJAM preventing connection to the licensing server

Solution:

Apply Security Hotfix and Troubleshoot Connectivity

If you are using an Autodesk 2014 or 2015 product, please apply this 

hotfix. If applying the hotfix does not resolve the issue, try these troubleshooting steps.

Windows OS:

Check the Internet Explorer connection settings

  1. Open Internet Explorer.
  2. Click Tools > Options.
  3. Access the Connections tab.
  4. Click LAN Settings. They should look like this:

  1. Click OK.
  2. Launch the product and test to make sure you can establish an Internet connection.

Check the Internet Explorer Advance settings 
* This solution applies after installing poodle hot fix or if you are running 2016

  1. Open Internet Explorer.
  2. Click Tools > Options.
  3. Access the Advanced tab.
  4. Scroll down and check ‘Use SSL 3.0’

Setting

  1. Click OK.
  2. Launch the product and test to make sure you can establish an Internet connection.

Additional Troubleshooting 
If you still can’t establish a connection, try the following:

  • Shut down and try to log in to Windows again.
  • Check that the machine time settings reflect the correct local time.
  • Check whether you are behind a proxy. It could be blocking the connection.
  • Check that antivirus software or firewall settings are not blocking Internet connectivity.
  • Rename the following Windows folder, appending a 2 to the folder name as:

Old name: C:\User\<username>\AppData\Roaming\Autodesk\ADUT\  
New name: C:\User\<username>\AppData\Roaming\Autodesk\ADUT2\

  • If you have administrator privileges, right-click the product icon (Revit, AutoCAD, and so on) and select Run as Administrator. Then close the program and reopen it normally.