I can't reproduce this. What version of wyUpdate.exe are you using? Copy & paste the full error.
When you launch a second instance, the second instance focuses the first instance and then immediately closes.
wyUpdate failed to start.
What the reasons can be?Is it possible to get this exception while two instances are both checking updates?
the full error i see is this text...
"wyUpdate failed to start."
I implemented it the latest demo version to my .net win forms app.
Oh, OK. You're using the AutomaticUpdater. Did you include wyUpdate.exe in the same folder as your app? Did you include the client.wyc file? Did you rename wyUpdate.exe to something else (if so, did you use the wyUpdateLocation property to reference the new name you gave wyUpdate)?
yes I changed the name of the updarter.exe
and that wyUpdateLocation prop is setted.
We need more information and/or a test app that reproduces this behavior. Or the third option is to use the AutomaticUpdater source code and attach a debugger to your process to figure out what's going wrong.