# The extension may have been corrupted

> The error message `This extension may have been corrupted` indicates that the browser has detected a potential issue with the installed extension, suggesting that it might be corrupted or damaged.

The error message `This extension may have been corrupted` indicates that the browser has detected a potential issue with the installed extension, suggesting that it might be corrupted or damaged.

You can check this issue by navigating to `edge://extensions` in Microsoft Edge, where the error message is displayed for the corrupted extension. In most cases, clicking the associated **Repair** button can fix the problem.

![docs image](https://dev-assets.cms.uipath.com/assets/images/studio/studio-docs-image-401471-83e73be1.webp)

To see more information about the extension, click **Details**.

![docs image](https://dev-assets.cms.uipath.com/assets/images/studio/studio-docs-image-401467-8773f344.webp)

We recommend switching to an installation by [Group Policy](https://docs.uipath.com/studio/standalone/latest/user-guide/extension-for-edge-chromium#install-from-group-policy). If the extension is installed using policy, it is automatically re-downloaded and repaired when it gets corrupted.

Below you can check the possible causes and solutions for this kind of error.

## Windows roaming user profile

### Description

The browser extension may be corrupted due to a roaming user profile. This issue may appear when large user profiles are synchronized/copied on the machine, and it takes time to copy those user profiles. The log-on or log-off duration increases according to the profile size because of the amount of data copied to or from the network share.

For more information on roaming user profiles, see the [Windows official documentation](https://learn.microsoft.com/en-us/windows-server/storage/folder-redirection/deploy-roaming-user-profiles).

### Solution

To avoid this issue, you can:

* Exclude the `%LocalAppData%\Microsoft\Edge\User Data` folder from roaming migration (if possible).
* Use the **UserDataFolderMode** and **UserDataFolderPath** properties to configure a persistent folder as custom user data folder. These properties are available for both the classic **Open Browser** or the modern **Use Application/Browser** activities.

  ![docs image](https://dev-assets.cms.uipath.com/assets/images/studio/studio-docs-image-359502-bedad27d.webp)

## Damaged or misconfigured browser user profile

### Description

The anti-virus, security programs, or files synchronization programs might change / delete / corrupt the extension files. Any such change to the extension files causes the browser to mark the extension as corrupted.

An example to illustrate this would be this one: [Chrome deletes extension folders on disk at launch after syncing data](https://issues.chromium.org/issues/40874861).

### Solution

Make sure the user data folder is in the anti-virus allowlist: `%LocalAppData%\Microsoft\Edge\User Data`.

Alternatively, you can use a different location for the browser user data folder, as described in the [Windows roaming user profile](https://docs.uipath.com/studio/standalone/latest/user-guide/edge-extension-corrupted#windows-roaming-user-profile) section.