How to open:These files are not meant to be opened directly and only server for cache purpose. You can safely delete them if needed.
How to convert:The *.thumbdata4 file type can't be converted to any other file format.
How to solve problems with THUMBDATA4 files
- Associate the THUMBDATA4 file extension with the correct application. On :
Windows: Right click on any THUMBDATA4 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.THUMBDATA4 files". Mac: Right click (or Ctrl-click) the THUMBDATA4 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
- Update your software that should actually open .THUMBDATA4 is Google Android thumbnail database. Because only the current version supports the latest THUMBDATA4 file format.
Search, therefore, e.g. on the Google Inc. manufacturer website after an available .THUMBDATA4 is Google Android thumbnail database update.
- To make sure that your THUMBDATA4 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.