To determine the file type of an image, go to the "How to determine the file type of an image" section.
Diagnose and fix the problem automaticallyThe Windows Photo and Slideshow Problems troubleshooter may automatically fix the problem described in this article.
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Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
To fix this problem, you have to disable precaching in Windows Photo Gallery. To do this, follow these steps:
- Click Start, click Run, type regedit, and then click OK.
Note If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
- Locate and then click the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Windows Photo Gallery\Viewer
- On the Edit menu, point to New, and then click DWORD Value.
- Type CacheSize, and then press ENTER.
- Right-click CacheSize, click Modify, type 0 in the Value data box, and then click OK.
- Exit Registry Editor.
How to determine the file type of an imageTo determine the type of the image file, use one of the following methods:
- Right-click the image file, and then click Properties. In the General tab, you can find Type of file.
- Uncheck the "Hide extensions for known file types" option in the View tab after you double click Folder Options in the Control Panel. This displays the file type of all files.
How the MATS package works to fix this problem
- The MATS package scans your computer and detects if the following conditions are true:
- The computer is running Windows Vista.
- There are more than 20 TIFF files in the %userprofile% subfolder.
- The CacheSize registry value that locates under the following path is not equal to 0 or does not exist: HKEY_CURRENT_USER\Software\Microsoft\Windows Photo Gallery\Viewer
- The MATS package disables precaching in Windows Photo Gallery.
Note During this process, a dialog box appears. This dialog box gives you the option to fix the issue automatically (this is the recommended option) or to manually select individual issues to fix.
- The MATS package verifies that precaching in Windows Photo Gallery was disabled successfully.