| File Type 1 |
WhereIsIt Catalog (Most common) |
| File Format |
File |
| Common? |
No |
| File Description |
Contains a catalog of a media collection; may include CD-ROMs, DVDs, audio CDs, hard drives, removable drives, network drives, and other storage media recognized by Windows |
| Program(s) that open ctf files |
Windows: WhereIsIt |
| File Type 2 |
Content Transformation File |
| File Format |
Standard File |
| Common? |
No |
| File Description |
Contains transformation information used for converting file metadata into a different format or structure; often applied to Content Definition (.CDF) Files.
CTF files may be used to transform multiple files with different structures into a consolidated format; this makes it possible to bulk load or migrate many files at once. |
| Program(s) that open ctf files |
Windows: ECMG Reader; ECMG Explorer |
| File Type 3 |
AVG Update Control File |
| File Format |
Proprietary File |
| Common? |
No |
| File Description |
Update file format used for updating AVG antivirus and security software; may be downloaded using the AVG TCP Server or AVGINET Lite programs, which download new updates as they become available; can be installed using AVG's Auto Update feature.
If CTF files become corrupted, the corresponding AVG program may not be updated; this problem can be fixed by running AVG's "deleteupdatefiles.exe" utility or by manually removing the CTF files and downloading the updates again; these files are typically named "avginfoavi.ctf" and "avginfowin.ctf" and are saved in the "\ProgramData\avg8\update\download" folder. |
| Program(s) that open ctf files |
Windows / Unix: AVG Software |
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