Hello @Ekatérina Bélozerova

This sounds like something that may have happened after a Windows update and is designed to actually protect your computer from so called ransom ware. Ie it prevents actions being carried out.

I would first make sure you have added both Studio and MultiTerm to your AntiVirus provider.

Then make sure BOTH Studio and MultiTerm are updated.

Should the problem persist, then please check this new MicroSoft article

https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/controlled-folder-access-blocked/7763c17c-0db7-42f7-a344-1471a843dde2?auth=1

Hello @Ekatérina Bélozerova

This sounds like something that may have happened after a Windows update and is designed to actually protect your computer from so called ransom ware. Ie it prevents actions being carried out.

I would first make sure you have added both Studio and MultiTerm to your AntiVirus provider.

Then make sure BOTH Studio and MultiTerm are updated.

Should the problem persist, then please check this new MicroSoft article

https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/controlled-folder-access-blocked/7763c17c-0db7-42f7-a344-1471a843dde2?auth=1

Hello,

Thank you very much for your answer.

Sorry but I didn't understand if your reply is related to all the three messages that I described or only to one of them. Which?

I didn't understand either what you mean by "you have added Studio and MultiTerm to your AntiVirus provider". I don't know how it is possible to add anything to the Antivirus.

I'm sure that BOTH Studio and MultiTerm are updated.

Thank you again.