The file "C: \ Program Files \ Microsoft SQL Server \ mssql.1 \ MSSQL \ data \ mastlog. LDF" has been compressed

In fact, this problem is very simple to solve.
1 right-click c: \ Program Files \ Microsoft SQL Server \ mssql.1 \ MSSQL \ data,
2. Click properties. On the General tab, click Advanced,
3. In the pop-up window, remove the compressed content or save disk space from the compression or encryption attributes. Click OK.
4. Click application and select apply to all files in the folder.
Or you only need to perform 2 or 3 operations on the databases required by the database system: Master, model, MSDB, and tempdb.