On friday, an update has been done on our sharepoint 2013 server and since I have some workflows which are in progress but they met some errors:
Thank you for your quick feedback
I have done a IISReset but now my workflows are on error wiith the following message:
So after each update my worklflow should failed and I'll have to restart them?
have you installed respective update?
have you noticed the link in comments?
update (usually) shouldn't cause workflows to fail.