I installed SQL server before and deleted it later. Now, "a previously installed program has created a suspended file on the installation computer. You must restart the computer before running the installer. Unable to proceed.
Steps:
1) Add/delete programs to completely delete SQL server.
2) Delete the SQL server Directory that has not been deleted.
3) Open the Registry Editor, find the PendingFileRenameOperations project in HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Session Manager, and delete it. In this way, you can clear the temporary installation project.
4) Delete the SQL server-related keys in the registry.
In fact, it is estimated that only step 1 can be done, so that you can clear the installation of temporary projects. I did this by leaving for 1, 2, 4, and 3. So it is estimated that 3 is the most critical
The above is the network search information, my computer system is just installed, So I directly do step 1, you can install