> For the complete documentation index, see [llms.txt](https://docs.bimcat.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bimcat.org/troubleshooting/open-in-ec3-display-frozen.md).

# "Open in Web App" Display Frozen

The **bimCAT plugin** uses [Microsoft Edge WebView2 Runtime](https://developer.microsoft.com/en-us/microsoft-edge/webview2/) to display content within the [Open in Web App](/user-manual/usage/tallycat-beta/open-in-ec3.md) window. Occasionally, the window may not properly render the bimCAT Building Planner, leading to issues like prolonged loading, blank displays, or freezes.

#### **Try Simple Solutions**:

* Close and reopen the [Open in Web App](/user-manual/usage/tallycat-beta/open-in-ec3.md) window.
* Restart Revit.

#### **Repair WebView2**:

If the above steps don't resolve the issue, it may be related to the [Microsoft Edge WebView2 Runtime](https://developer.microsoft.com/en-us/microsoft-edge/webview2/) installation. Consider repairing it:

* Exit Revit.
* Navigate to **Windows Start Menu > Add or Remove Programs**.

<figure><img src="/files/Mmoi8DTOWAEUXbtaKC6y" alt=""><figcaption></figcaption></figure>

* Locate **WebView2** in the Installed Apps list. It should appear as "**Microsoft Edge WebView2 Runtime**".

<figure><img src="/files/tkRdgrWX6G0mlq3HApkj" alt=""><figcaption></figcaption></figure>

* Click on the three-dot menu next to the application and select **Modify**.

<figure><img src="/files/xq6bBmQfhtJwjweNHfPi" alt=""><figcaption></figcaption></figure>

* In the installer window that appears, select the **Repair** button.

<figure><img src="/files/pBlo5NieJi9PUCdD5qUk" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/3LaR2wbt2a5yC6VkpRj2" alt=""><figcaption></figcaption></figure>

* Once the repair process concludes, restart Revit and attempt to launch the [Open in Web App](/user-manual/usage/tallycat-beta/open-in-ec3.md) window again.

#### **Reporting the Issue**:

If, after following these steps, the problem remains unresolved, kindly use the [Report a Bug](/user-manual/usage/help/report-a-bug.md) feature to provide us with the specifics of the issue.


---

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