Hello Jojit,
Thank you for posting question on Microsoft Windows Forum.
Based on your query of having trouble on scratching the covered product key rendering some portion of the product key to be unreadable.
The following are some suggestions to address the issue.
1.Check the Packaging and Documentation.
- Occasionally the product key is printed not only under the scratch-off label but also inside the box, on a Certificate of Authenticity (COA), or in your purchase receipt/email if you bought it digitally.
2.Look in Your Microsoft Account.
- If you purchased Windows Server 2025 directly from Microsoft or linked it to your account during installation, the product key or digital license may be stored in your Microsoft account under Services & subscriptions.
3.Contact Your Vendor/Reseller.
- If you bought a physical copy from a store, explain the situation. Retailers often have procedures for damaged product keys and may be able to issue a replacement or verify your purchase.
- Provide Proof of Purchase: Have your sales receipt, invoice, or any other proof of purchase ready.
- Request Assistance: Since you bought the license only a week ago, the vendor may have a record of the key or can help initiate a replacement process through their partner channel (like the Microsoft Volume Licensing Service Center or OEM partner channel).
4.Contact Microsoft Support.
- Reaching out Microsoft which can help recover or reissue a product key if you provide proof of purchase.
- Provide Details: Explain that your product key is physically scratched and partially unreadable.
- Offer Documentation: Be ready to send them photos of the damaged key card/sticker and your proof of purchase (receipt/invoice). Microsoft support agents are sometimes able to look up or verify the key based on the associated product and your purchase documentation.
- You can start here: https://support.microsoft.com/contactus
Hope the above information is helpful! If it is. Free feel to hit "Accepted" for benefitting others in community having the same issue too.