I recently installed AutoCAD 2013 onto my computer which has windows 7 64 bit operating system. After completing installation, I tried to open AutoCAD and immediatly I recieved this error, "Fatal error: Unhandled Access violation Reading 0xffffffff Exception at e78c0004h. I was wondering if anybody knows what that error is signaling and could help me resolve the problem. Thank you!
The problem was my video card. I have a gtx 660m with optimus and I was getting the error on my dedicated card. I went into my nvidia preferences told it to run autocad using my integrated intel 4000 video card which did the trick. Thank you for all the help, much appreciated!
hello, I have the autacad 2016 , while working on my project the file stopped working and they where putting that there was a fatal error Unhandled: Access violation Reading 0xfffffff Exception at 944ea7c0h could you please help me solve it ,Thank you.
I had the AutoCAD 2020 student version installed and 'FATAL ERROR: unhandled access violation reading 0x0028 exception at 591b4a11h' message appeared while I was working and AutoCAD crashed and closed. Then I installed AutoCAD 2021, and when I relaunched the program, the same thing happened. Please help as I am not able to find the solution and I have work due to submit.
I get the following error message when trying to open a sewer model in SSA 2016 and 2018 that has previously worked just fine and hasn't had any changes made to it: "access violation at address 004bb717 in module stormsanitary.exe read of address 00000260".
> (Mesage has been moved from the 'autocad.network' newsgroup)
>
> James C. Seymour III wrote:
>
> > I have noticed the same errors... I ran surface scan and defrag a few times
> > to make sure the harddrive was clean and that seemed to help a little. The
> > last computer that happened to I re-loaded AutoCAD and the problem went
> > away. Some of the drawings I use are up to about 9 megs but I do not get
> > the error as much as you do. Are you using the 14.01 upgrade?
> >
> > Ed Tamiso wrote in message ...
An access violation occurs in unmanaged or unsafe code when the code attempts to read or write to memory that has not been allocated, or to which it does not have access. This usually occurs because a pointer has a bad value. Not all reads or writes through bad pointers lead to access violations, so an access violation usually indicates that several reads or writes have occurred through bad pointers, and that memory might be corrupted. Thus, access violations almost always indicate serious programming errors. An AccessViolationException clearly identifies these serious errors.
In programs consisting entirely of verifiable managed code, all references are either valid or null, and access violations are impossible. Any operation that attempts to reference a null reference in verifiable code throws a NullReferenceException exception. An AccessViolationException occurs only when verifiable managed code interacts with unmanaged code or with unsafe managed code.
This exception is thrown on .NET Framework 2.0 and later versions. In earlier versions of .NET Framework, an access violation in unmanaged code or unsafe managed code is represented by a NullReferenceException in managed code. A NullReferenceException is also thrown when a null reference is dereferenced in verifiable managed code, an occurrence that does not involve data corruption, and there is no way to distinguish between the two situations in versions 1.0 or 1.1.
My autocad used to have problem , it shows that " FATAL ERROR : Unhandled Access Violation Reading 0x0000 Exception at 4b21164", every time I try to open the autocad program. so, I tried to reinstall back the autocad and yes the fatal error has disappear and I can used the program back . but the new problem is every time I want to plot my drawing it shows a windows "memory allocation error : this plotter configuration cannot be used either the driver cannot be found, or the driver has a problem. the none plot devices has been substituted". What should I do to troubleshoot this problems? FYI, I use AutocadLT 2000.
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