Thanks for your request. The problem might occur because you are setting the license multiple times in multiple threads. The older versions of Aspose.Words have a problems with such scenario. The problem was fixed few releases ago so now it is safe to set license in multiple threads. However, it is still not recommended. It is better to set license only once per application domain.
we have 18.104.22.168
Thanks for your inquiry. Yes, this version has the problem with setting a license in multiple threads. The problem was fixed in 9.8.0 version. You can download it from here:
if I will create a static class which has only setlicense code , but I will use aspose from other classes it will be enough ?
Thanks for your inquiry. Yes, I think, it would be enough. Please follow the link to learn when to apply the license: