Simulink crash - unexpected exception

Hello,

my name is Lukas.

Once I open Simulink I got the following error:

Unexpected exception (mwboost::interprocess::intermodule_singleton initialization failed) was caught.

Then, when I try to add a block, Simulink and Matlab crash, giving following error.

Internal program error while accessing database.

I attach the report.

I will be greatful for any help you can give me.

Happy Easter,

[志涛 高]

thank you very much,it does work with clearning event logs!

my version is matlab2019a,and for i need to use QUARC2020 i cannot change to use anyother matab version.

Answer 1

[Lukasz Grabowski]

With help from Matlab and Microsoft support we found up that the solution is simple.

Open "Disk Cleanup" in Windows 10, clear system files, the reboot Windows.

It is a work around way for solving this issue, but for now the working one (2019a version of Matlab)

[Erik Vogt]

Hello,

i have the same problem but it doesnt work for me :((

[Lukasz Grabowski]

I do not know then.

MatLab support answerd me this:

>To clear the logs, you can Run Event Viewer as Admin user, clear the logs in "Windows >Logs/System" and restart the machine. You can refer to the 3rd party tutorial below to try it out:

>https://mywindowshub.com/how-to-clear-all-event-logs-in-event-viewer-in-windows-10/

Howerver this didnt work for me so I used "Disk Cleanup" instead to clear system logs. Remember to restart your system.

I have to do this every time I open my Windows again.

Check if your error report is the same as mine.

[Erik Vogt]

Hello thank you for the feedback, this was also the „solution“ the matlab service offered, however it is only a temporary solution. Mathworks is already working to fix the problem with the next release so far i know

[George Iskander]

It worked :) :) Thanks Lukasz Grabowski

I've used Disk-clean up and Event view method then I restared my PC

And simulink started normally......

But I have another problem ....

Simulink Onramp failed to launch... Any Help .......

[Fathi Athirah Zulkefli]

hi, where i have to clear system files? is it on the file that contains matlab file?

Answer 2

[Italo Belli]

I have the same problem, I tried using "Disk Clean-up" and restartin my laptop but it did't work. Is there a more effective solution to this?

[Erik Vogt]

Use the event viewer solution , however after every restart the failure will occur. My solution was to install 2018b

[Italo Belli]

Hi,

I installed Matlab 2018b and it works fine (so far)! Thank you very much for your answer!

PS: anyway, I hope that the reason for the problem can be found in 2019 version...

Answer 3

[George Iskander]

I've used Disk-clean up and Event view method then I restared my PC

And simulink started normally......

Answer 4

[Heinrich Eismann]

I had the same problem. When I tried to access the library simulink crashed with unexpected exception error. The problem is related to database connection fault. To resolve this issue you may install a JDBC driver, for instructions see here, or downgrade ODBC to an earlier version. If you just need to finish your project and don't have time then fix invalid shortcuts and defrag your machine. I use ASC free version, works like a charm.