''adv18 [[#question-1282684|said]]'' <blockquote> Good afternoon. For two weeks, a problem occurs periodically, after sending a message the program crashes. What could be the problem and how to fix it. We use it for more than a year, before such a problem was not observed. </blockquote> Can you post the latest crash report URLs? Help/Troubleshooting, Crash Reports. Run [https://support.microsoft.com/en-ca/help/12376/windows-10-start-your-pc-in-safe-mode Windows in safe mode] to test if a startup app, such as security/antivirus, a common cause of crashes, is the source of the problem.