Create a new file or open an existing one using ONLYOFFICE Desktop Editors. Switch to the Protection tab at the top toolbar and click the Encrypt icon.
Alternatively, you can switch to the File tab at the top toolbar, open the Protect section on the left sidebar and click the Add password button.
The Set password window opens. Specify the password you want to use to protect the file and repeat it in the corresponding fields. The password is case sensitive. When ready, click OK.
If you lose of forget the password, there is no possibility to restore or reset it and open the file. Please, create a strong password that you can remember or keep a copy of the password in a safe place.
When you close the file and try to open it once again, you’ll be asked for a password. Enter the password and click OK to open the file.