---
schema_version: "1"
id: 738f3ebf70088ccda324ac891ebf88f6703969184577f98345a72d91fde80a64
title: Uncaught Exceptions in Visualforce
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/platform/264-0-0/pages_uncaught_exceptions.md
canonical_url: https://help.salesforce.com/s/articleView?id=platform.pages_uncaught_exceptions.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: d629d7359e5395dfecbddc500c7d51bb04c9a1921dba517274214b13157a5ac8
description: Visualforce displays extra information when a page encounters errors during execution. This information can help you resolve problems with the page’s code, or at least track down an owner to look further into the problem.
products:
  - Salesforce Platform
release: "264"
---
# Uncaught Exceptions in Visualforce

Visualforce displays extra information when a page encounters errors during execution. This information can help you resolve problems with the page’s code, or at least track down an owner to look further into the problem.

If a Visualforce page that you didn’t develop has an error or uncaught exception:

- You see a simple explanation of the problem in Salesforce.
- The developer who wrote the page receives the error via email with your organization and user ID. No other user data is included in the report.

If you’re in development mode and _not_ in the same namespace as the page, you see the exception message, the exception type, and a notification that the developer was notified by email.

If you’re the developer and in the same namespace as the page, and you are _not_ in development mode, you see an exception message. You might also see a message indicating that the developer has been notified. If you _are_ in development mode, you see the exception message, the exception type, and the Apex stack trace.

#### See Also

- [Debug Your Code](https://help.salesforce.com/s/articleView?id=platform.debugging_your_code.htm&release=264.0.0&type=5 "Use checkpoints, logs, and the View State tab to help debug the code you’ve written.")