Lightroom Classic CC 8.0 (October 2018 release) crashes during launch on Windows. This issue can occur when Lightroom Classic's language preference is set to Automatic (default) while your operating system's language is set to a language that is not supported by Lightroom Classic.
Install any previous version of Lightroom Classic CC 7.x (from versions 7.0 through 7.5) using the Creative Cloud desktop app. See Install previous version of your Creative Cloud app.
Update Lightroom Classic to the latest version using the Creative Cloud desktop app. See Update Creative Cloud apps.
Launch the app after installing the latest version. The crash issue should now be resolved.
Before you begin, it is recommended that you back up the registry. See Microsoft's documentation: How to back up and restore the registry in Windows.
Open the Registry Editor.
Press Windows + R keys or choose Start > Run. In the Run dialog, type regedit.exe and click OK.
If you are prompted for an administrator password or for confirmation, type the password or provide confirmation. If you have restricted access to the Windows computer you're logged into, you may not be able to access the Windows registry. Ensure that you have administrative privileges on your computer.
In the Registry Editor window, navigate to the folder path below:
Computer\HKEY_CURRENT_USER\Software\Adobe\LightroomDoes the Lightroom folder exist?
- No: If the Lightroom folder does not exist in the left pane at folder path mentioned above, proceed to Step 3 below.
- Yes: If the Lightroom folder exists, check for an entry called language in the right-pane.
Does the language entry exist?
- No: If the language entry does not exist, proceed directly to Step 3c.
- Yes: If the language extry exists, check if its value is set to en in the Data Value column.
Is the language value set to en?
- No: If the language value is not en, proceed directly to Step 4.
- Yes: If the language value already set to en, run Lightroom.exe as an administrator to resolve the crash issue. The default installation path is: C:\Program Files\Adobe\Adobe Lightroom Classic CC\Lightroom.exe. See Run an Adobe program as administrator.
Do the following:
a. Right-click the Adobe folder in the left pane. From the pop-up menu, choose New > Key.
b. Right-click this new key in the left pane and choose Rename from the pop-up menu. Type the name as Lightroom and press Enter.
c. Ensure that the Lightroom folder is selected. In the right pane, right-click anywhere in the empty area and choose New > String Value.
d. Right-click this new value entry in the right pane and choose Rename from the pop-up menu. Type the name as language and press Enter.