Access Violation error for every user as of today

[MarcusRangel]

Good morning,

Starting this morning, all my users are getting this error at logon: "Access Violation at address XXX. Write of Address YYY" (see image). Our version is 13.0.6.1910/1911 (64-bit) running on Windows 10 64-bit, connecting to Oracle 12.1; everything was working on Friday. Any ideas?

Edit: added debug.txt

Best Regards,
Marcus


View attachment Debug.txt

 

[Marco Kalter]

Can you check if you had a virus scanner update? We have had some additional reports the past few days where PL/SQL Developer suddenly stopped working that were caused by a virus scanner blocking all network traffic from the Oracle Server to the Oracle Client.

 

[Marco Kalter]

It seems that Bitdefender Endpoint Security is blocking the 64 bit version of PL/SQL Developer. The solution is to add the PL/SQL Developer installation directory (C:\Program Files\PLSQL Developer [version]) to the exception list in Bitdefender.

Can you confirm?

 

[MarcusRangel]

It worked like a charm, thank you!

Some additional information for posterity: the 32-bits version was working fine; same for version 15 64-bits.

 

[Marco Kalter]

Great, thanks for the information!