Uninstall entirely

The standard process to uninstall Picasa is sufficient for most users. This process does not remove certain additional files that Picasa may need if you plan to reinstall. The following detailed instructions will walk you through a thorough removal of Picasa, which you should use only if you don't plan to reinstall the application:

This process will delete all unsaved photo edits and album organizations.

Windows XP

  1. Uninstall Picasa
    1. Click the Start menu on your computer taskbar.
    2. Select All Programs > Picasa 3 > Uninstall.
    3. Click the Uninstall button in the confirmation window.
    4. As you're permanently removing Picasa, click Yes to remove your database, which keeps record of user-specific information in Picasa.
    5. Click Finish.

  2. Remove your Picasa2Albums folder

    The Picasa2albums folder stores all of your Picasa album definitions. This folder is not removed by uninstalling and will need to be manually deleted.

    By deleting the Picasa2Albums folder, you're deleting all of the custom albums that you've created in Picasa.

    1. Double-click the My Computer icon on your desktop.
    2. Make sure you've displayed your hidden files and folders in Windows Explorer.
      1. In Windows Explorer, click the Tools menu.
      2. Select Folder Options.
      3. Click the View tab.
      4. In the 'Hidden files and folders' section of 'Advanced settings,' click the 'Show hidden files and folders' option.
    3. Go to Local disk (C:) > Documents and Settings > [username].
    4. Double-click Local Settings > Application Data > Google.
    5. Right-click the Picasa2Albums folder.
    6. Select Delete.
    7. Click Yes in the confirmation window.

  3. Remove picasa.ini files

    Picasa leaves behind picasa.ini and .picasa.ini files when you uninstall the application. These files contain unsaved edits that you've applied to your photos. To remove these from your computer, you'll need to search for and delete these files:

    1. Click the Start menu > Search.
    2. Click All files and folders.
    3. Expand the search to hidden files and folders.
      1. Click More advanced options.
      2. Check the box next to 'Search hidden files and folders.'
    4. Search for the file 'picasa.ini'.
    5. Press Ctrl-A in the search results window to select all 'picasa.ini' files.
    6. Right-click any file.
    7. Select Delete.
    8. Click Yes in the confirmation window.
    9. Perform the same action for '.picasa.ini' files.

    This should wipe your machine clean of all picasa.ini files.


  4. Remove Picasa's registry keys
    Making mistakes in your Windows registry can cause serious repercussions on your computer. Removing Picasa's registry keys is the final step to completely uninstall the application. The instructions below are exact and include backing up the existing registry. Alternatively, you can choose to skip this step.

    To remove Picasa's registry keys, please follow these steps:

    1. Click the Start menu > Run.
    2. Enter 'regedit' in the text field.
    3. Click Ok.
    4. Export a backup of your registry settings before you continue.
      1. Click File > Export.
      2. In the 'File name' field, enter 'Picasa' and save the backup file to your Desktop.
    5. Click the + sign next to HKEY_CURRENT_USER > Software > Google.
    6. Right-click Picasa and select Delete.
    7. Click Yes in the confirmation window.
    8. Click the + sign next to HKEY_LOCAL_MACHINE > Software > Google.
    9. Right-click Picasa and select Delete.
    10. Click Yes in the confirmation window.
    11. Close the Registry Editor.
    12. Restart your computer.

    You have now completely removed Picasa from your computer.

    If you receive any Windows Registry errors upon restarting your computer, please double-click the 'picasa.reg' backup file on your Desktop to fix the problem.

Windows Vista

  1. Uninstall Picasa
    1. Click the Start menu on your computer taskbar.
    2. Select All Programs > Picasa 3 > Uninstall.
    3. Click the Uninstall button in the confirmation window.
    4. As you're permanently removing Picasa, click Yes to remove your database, which keeps record of user-specific information in Picasa.
    5. Click Finish.

  2. Remove your Picasa2Albums folder

    The Picasa2albums folder stores all of your Picasa album definitions. This folder is not removed by uninstalling and will need to be manually deleted.

    By deleting the Picasa2Albums folder, you're deleting all of the custom albums that you've created in Picasa.

    1. Double-click the Computer icon on your desktop.
    2. Make sure you've displayed your hidden files and folders in Windows Explorer.
      1. Navigate to Start > Control Panel.
      2. Select Folder Options.
      3. Click the View tab.
      4. In the 'Hidden files and folders' section of 'Advanced settings,' click the 'Show hidden files and folders' option.
    3. Go to Local disk (C:) > Users > [username].
    4. Double-click Application Data > Local > Google.
    5. Right-click the Picasa2Albums folder.
    6. Select Delete.
    7. Click Yes in the confirmation window.

  3. Remove picasa.ini and .picasa.ini files

    Picasa leaves behind picasa.ini and .picasa.ini files when you uninstall the application. These files contain unsaved edits that you've applied to your photos. To remove these from your computer, you'll need to search for and delete these files:

    1. Click the Start menu > Search.
    2. Click All.
    3. Expand the search to hidden files and folders.
      1. Click Advanced Search.
      2. In the new menu that opens, check the box next to 'Include non-indexed, hidden, and system files (might be slow).'
    4. Search for the file 'picasa.ini'.
    5. Press Ctrl-A in the search results window to select all 'picasa.ini' files.
    6. Right-click any file.
    7. Select Delete.
    8. Click Yes in the confirmation window.
    9. Perform the same action for '.picasa.ini' files.

    This should wipe your machine clean of all picasa.ini and .picasa.ini files.


  4. Remove Picasa's registry keys
    Making mistakes in your Windows registry can cause serious repercussions on your computer. Removing Picasa's registry keys is the final step to completely uninstall the application. The instructions below are exact and include backing up the existing registry. Alternatively, you can choose to skip this step.

    To remove Picasa's registry keys, please follow these steps:

    1. Click the Start menu, type 'Run' into the text field, and click the Run program.
    2. Enter 'regedit' in the text field.
    3. Click Ok.
    4. Export a backup of your registry settings before you continue.
      1. Click File > Export.
      2. In the 'File name' field, enter 'Picasa' and save the backup file to your Desktop.
    5. Click the carrot sign next to HKEY_CURRENT_USER > Software > Google.
    6. Right-click Picasa and select Delete.
    7. Click Yes in the confirmation window.
    8. Click the + sign next to HKEY_LOCAL_MACHINE > Software > Google.
    9. Right-click Picasa and select Delete.
    10. Click Yes in the confirmation window.
    11. Close the Registry Editor.
    12. Restart your computer.

    You have now completely removed Picasa from your computer.

    If you receive any Windows Registry errors upon restarting your computer, please double-click the 'picasa.reg' backup file on your Desktop to fix the problem.

Mac

  1. Move the Picasa application into the Trash.
    1. Open Finder.
    2. In the Applications folder, drag and drop the Picasa application into the Trash.

  2. Move the Picasa 3 Application Support into the Trash.
    1. Open Finder.
    2. Double-click [username} > Library.
    3. Double-click Application Support > Google.
    4. Drag and drop the Picasa 3 folder into the Trash.

  3. Move the file 'com.google.picasa.plist' into the Trash.
    1. Open Finder.
    2. Double-click [username] > Library > Preferences.
    3. Drag and drop the file 'com.google.picasa.plist' into the Trash.

  4. Remove .picasa.ini files.

    To delete .picasa.ini files from a Mac, you must show hidden files and folders, and delete them one by one.