WebView2 Data Folder Configuration and Troubleshooting

Dataedo Desktop uses Microsoft Edge WebView2 for certain UI features such as Data Lineage diagrams. WebView2 requires a writable folder to store its runtime data (the EBWebView folder). If it cannot find a writable location, some features may fail to load.

Data folder resolution order

On startup, Dataedo tries the following locations in order and uses the first one it can write to:

Priority	Location	Path
1	Custom path from DataedoSettings.json	Value of WebView2UserDataFolder
2	Roaming AppData	%AppData%\Dataedo {version}\EBWebView
3	Local AppData	%LocalAppData%\Dataedo {version}\EBWebView
4	Local Temp	%LocalAppData%\Temp\Dataedo {version}\EBWebView
5	System Temp	%Temp%\Dataedo {version}\EBWebView
6	Application directory	Only available when Dataedo is not installed in Program Files

Where {version} is the major version number of Dataedo (e.g., 26).

Setting a custom path in DataedoSettings.json

You can override the default folder resolution by specifying a custom path in the DataedoSettings.json file located next to Dataedo.exe.

Set the WebView2UserDataFolder value:

{
  "WebView2UserDataFolder": "D:\\DataedoCache\\EBWebView"
}

Path rules

• Backslashes in the path must be escaped as \\ (standard JSON syntax). For example: "D:\\DataedoCache\\EBWebView".

• Absolute and relative paths are supported. Relative paths are resolved relative to the Dataedo.exe directory.

• Environment variables are supported — for example %USERPROFILE%\\DataedoWebView.

• Do not use paths inside Program Files or Program Files (x86) — these directories are read-only for standard users and WebView2 will not be able to write there.

Program Files behavior

When Dataedo is installed in Program Files or Program Files (x86):

• The application directory fallback (priority 6 in the table above) is disabled because these folders are typically read-only for non-admin users.
• Dataedo must find a writable folder from priorities 1–5.

When Dataedo is installed outside Program Files (e.g., on a secondary drive), the application directory can be used as a last resort.

Troubleshooting

If WebView2 fails to initialize, Dataedo displays an error dialog with a code and the list of paths it attempted. Common error codes:

Code	Meaning
WV2-ACCESS	Permission denied — the folder is not writable by the current user
WV2-NOTFOUND	WebView2 Runtime is not installed on the machine
WV2-COM-XXXXXXXX	A COM/system error occurred (e.g., WV2-COM-8000FFFF for a catastrophic failure)

Steps to resolve

1. Verify that WebView2 Runtime is installed — download it from the Microsoft WebView2 page if needed.
2. Check folder permissions — check if the current Windows user has read/write access to the target folder.
3. Set a custom writable path in DataedoSettings.json as described in Path rules above.
4. Check antivirus software — some antivirus programs block access to the EBWebView folder. Add an exclusion if necessary.
5. Contact support — if the issue persists, submit a ticket and include the error code from the dialog.

Need help?

If you run into any problems or have questions, reach out to Dataedo support.