# Freeze NFT accounts Mint accounts may also contain a freeze\_authority (freeze Account) that can be used to issue instructions that render the account unusable. Any write instruction containing a token that freezes the account will fail until the account is unfrozen using the mint account Thaw instruction. The SetAuthority instruction can be used to change the mint's freeze\_authority. If the Mint account freeze\_authority is set to None, the mint\_authority account will be used by default to exercise freeze authority. If freeze\_authority is not None, using mint\_authority for freeze operations will not take effect. In addition, mint\_authority can modify the freeze\_authority of the mint account. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.put.com/library/nft-program/operation-overview/freeze-nft-accounts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.