I downloaded the file again from ImgBurn directly, and the hash matched. I was surprised to find that the file I had downloaded from SpeedLabs mirror did not match: It can derive md5, sha1, or both for one or more files. I found the “File Checksum Integrity Verifier” tool - KB841290. The main site lists md5 and sha1 hashes, so I looked for a tool to calculate the hash of the file I had downloaded. I was downloading the ImgBurn utility from a mirror site today, and something made me think I should be careful. REG ADD "HKLM\System\CurrentControlSet\Services\CSC\Parameters" /v FormatDatabase /t REG_DWORD /d 1 /fĮvery now and then, I want to make sure that a file I’m downloading - especially from a mirror site - hasn’t been currupted in transit, or more likely poisoned with malware. In an elevated command prompt, run the following command. The setting of this registry value may be automated using REG.EXE. Note that you will have to create the Parameters key, and any unsynchronized changes will be lost. In addition, any files and folders pinned by means other than Folder Redirection or Group Policy will no longer be pinned on that client. HKLM\System\CurrentControlSet\Services\CSC\Parameters\FormatDatabase To reinitialize the Offline Files cache, create the following DWORD registry value with a value of 1 and restart the system. In Windows 7 and 8, the process requires setting a single registry value: For this reason, I will often make a local copy of “My Documents” to another folder on C: (e.g.: c:\temp\MyDocsCopy) while the network interfaces are disabled, to make sure I’m copying data from the cache. If you have files in the Offline Files cache that haven’t been successfully synced to the server, those files will be lost. You need to perform a sync operation in order to populate your files into the Offline Files cache again. NOTE: Once you set the value and reboot, all the content in the Offline Files cache for all accounts on the system is purged. But occasionally, the Offline Files database still gets munged. With Windows Vista and later, the reworked Offline Files facility has worked much better.
How Macintosh is that? I’ve had to perform that maneuver a few times. In Windows XP: In Explore’s Tools → Folder Options → Offline Files, then press CTRL+SHIFT and click the “Delete Files” button.
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