Encountering the "Sorry, no manipulations with clipboard allowed" error can be frustrating, but effective solutions exist. Firstly, restart the computer and ensure no conflicting applications are running. Attempt to copy and paste plain text to eliminate formatting issues. If the problem persists, check for clipboard-related third-party software causing conflicts and disable or uninstall them. Updating your operating system and applications can also address compatibility issues triggering the error. Clearing clipboard history and cache might help. Ultimately, if the error still persists, seeking guidance from relevant online communities or contacting technical support for your system or software could provide further insight and solutions.