Dorico 4 does not start on Windows 10

Hi @gordon123ster, no, that would not help at all. But please do from Dorico’s menu Help > Create Diagnostics Report and post the corresponding zip file here. From the contained logs and files I can maybe give some advice. Thanks

Hi Ulf,

Apologies - here is the zip file attached.

Many thanks,

Kind regards,


Dorico (720 KB)

Thanks for the data, Gordon.

The audio engine logs look normal, but the Dorico logs show an unusual delay during the initialization phase 1 of about 45 seconds. I don’t know what Dorico is doing at that phase, but @dspreadbury should be able to shed some light on it.

Thanks Ulf, I have sent it as suggested.


My colleagues have taken a look at your logs, Gordon, and it appears that the hold up is somehow related to Steinberg Licensing, which is the new licensing system used by Dorico 4 (and other Steinberg products).

In order to help us figure out what’s going on, we ask that you please install Microsoft’s Process Explorer tool:

Run Process Explorer, then start Dorico. After 20 seconds, right-click on the Dorico.exe process in the Process Explorer window, and from the context menu choose Dump > Create Minidump. Zip up the resulting file and attach it here. (1.1 MB)
Thanks for the information - I have attached the file as requested. Very strangely Dorico stated normally today - I have no idea why. Hopefully the zip file gives you some information.

Thanks for all your help,


Just should add that the quicker Dorico 4 start only occurs if the Process Explorer is open

Just wondering if my reply was adequate

I’m a bit stumped as to how to capture the information we need to see about what Dorico is doing when it is waiting for a reply from the licensing system when the act of observing it appears to prevent it from happening! Is it absolutely consistent that Dorico starts up quickly if Process Explorer is running, and takes more than a minute if Process Explorer is not running?

Yes I have tried this several times and indeed the opening of the Process Explorer allows Dorico to start normally. It definitely started after having to update the License after installing the version 4.

Perhaps the path of least resistance is to simply leave Process Explorer running, then! Nevertheless, I will ask my colleagues tomorrow if they can think of how we can investigate further if the software we need to run in order to collect the required data appears to prevent the issue from arising in the first place.

Hello again and sorry to bother you but the problem has now worsened. I installed the updates recently advised for Doric 4. The programme now sometimes will not start at all and if it does start, once one project is closed another will start but the sound vanishes and the programme freezes. I created another mini dump - this time with the process explorer open the programme failed to start so maybe some better information here. Just wondering if I should uninstall and reinstall and how best to do that if you think this is advisable.

Here is the zip file: (1.4 MB)
Many thanks,

Do you have HALion Sonic 7 installed? If so, then please have a look at this thread.

If not, I need also a dump of the VSTAudioEngine process.

Yes I have Halion Sonic 7 installed and will carry out as suggested in the thread and let you know the result.
For completeness here is the dump of the VST Audio engine: (619.7 KB)
Many thanks

I think the Steinberg Media Server BAT file has helped alth
2023-02-28 (524.3 KB)
ough start up very slow still. I have a new minidump here should this help