Slow Mist Cosine: If the browser wallet extension is damaged due to antivirus, do not delete it immediately, and recover files from the quarantine area
"If antivirus software misreports your browser extension, such as the js file of a wallet extension is misreported, antivirus software is generally quarantined, then the wallet extension is damaged and cannot be opened. At this time, the file can be restored from quarantine, do not delete it. If deleted, do not uninstall the wallet extension, and there is still a chance to recover the files related to the local encrypted private key."