Technologies of MS Excel password recovery traditionally develop along three directions: • Online services run decryption of protected files on company servers. Here, the user is required to upload their protected file to a decryption server. Since the files mostly carry sensitive information, many reasonably think it undesirable. • The other way is to apply an attack method to try possible combinations of symbols (Brute-force attack and other type of attacks). For strong passwords it can take days without guaranteed success. • Password removal is another alternative that can be effective but consumes time and resources on the user side (about ten days even on modern Pentium 4 computer). Our solution is a breakthrough in technologies of excel password recovery. It combines the benefits of each method without inheriting their respective weaknesses. The search for an excel document decryption key is done on our powerful specialized server, while the actual decryption is performed on the userРІР‚в„ўs computer. The process takes a few seconds and ensures perfect security. All sensitive data remains on the userРІР‚в„ўs machine.