Advanced Threat Defense Update causing access violations

There might be many cause to the issue:

1) Access violation errors often occur when a program tries to access memory in a way that it's not allowed to. It's possible that the Bitdefender update introduced a change that conflicts with how your program accesses memory.

2) Adding the exe and mdb files as exceptions might not have worked because ATD may be looking for more than just file paths.

Try the steps below and see if they help:

1) Update Bitdefender: Make sure you have the latest virus definitions and software updates for Bitdefender. Sometimes, newer updates can fix compatibility issues.

2) Check for Program Updates: See if there are any updates available for the program itself. Sometimes, program updates can address compatibility issues introduced by other software.

3) Set exclusions in Bitdefender 

• Temporarily disable Bitdefender Protection: https://www.bitdefender.com/consumer/support/answer/28557/
• Set exclusions in Bitdefender Antivirus: https://www.bitdefender.com/consumer/support/answer/13427/
• Set exclusions in Bitdefender Advanced Threat Defense: https://www.bitdefender.com/consumer/support/answer/2393/
• Re-enable real-time protection in Bitdefender.

4) If you continue to face the problem, try repairing your Bitdefender product (https://www.bitdefender.com/consumer/support/answer/13429/)

If the issue persists, kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/. Depending on the product you've selected and the type of issue you're facing, you can get in touch with a support representative via email, chat, or phone.

If you choose email, you will receive a ticket number in your registered email. Kindly generate and attach the following logs to the ticket number you received on your registered email:

Generate Bitdefender BDsysLog: https://www.bitdefender.com/consumer/support/answer/1922/

Generate Bitdefender Support Tool Log: https://www.bitdefender.com/consumer/support/answer/1733/

Generate Bitdefender Connectivity Log: https://www.bitdefender.com/consumer/support/answer/9689/

If the generated logs are larger than 25 MB, which is the attachment limit for most email vendors, you can upload the logs to https://upload.bitdefender.net/ and share the link with the support team.  

Regards