The specific methods for obtaining a replacement license activation key vary depending on the software type, version and the method of purchase. Some companies may offer a replacement activation key with valid proof of purchase and ownership, while others create a digital copy of the key after you register the product.
It may not always be possible to recover a lost or stolen product activation key, as many companies have strict requirements for reissuing keys in order to prevent fraud. The first step to requesting a replacement key is to reach out to the customer service department of the company that owns the software. Explain the circumstances that resulted in the lost key and why you need a replacement. The company may require your original receipt and an image of the installation medium.
Some companies create records of purchases when you make them through special accounts, such as purchasing Microsoft Office through a Microsoft account. In this instance, the account serves as your proof of purchase for requesting a duplicate key. Some companies also create a record when you register the software, so check with the company to see if they have your registration information. The software company may also provide instructions for recovering the code within the program itself.