# Unexpected Error Occurred
## Problem
'Unexpected error occurred.' or 'Installation error' is visible:
| [](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/2043367777743/original/x6FsfDRcYNklPH97REzWdNXYAoT8fWDRZw.png?1659618091) | [](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/2043367777775/original/KN2oGzF9q6fRPmF_OHRGUgxOSK_RNQZT0Q.png?1659618099) |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Firewall/proxy might be blocking access to our storage server
## Solution
Ensure that the proxy is configured to allow unrestricted and anonymous access to the below domains:
1\. [**http://api.dock.agacad.com/public/\***](http://api.dock.agacad.com/public/*) - ARKANCE Dock Appstore
2\. [**https://srv.softwarepotential.com/SLMServerWS/ActivationWS.svc**](https://srv.softwarepotential.com/SLMServerWS/ActivationWS.svc) - activation service
3\. [**http://cdn.iv.agacad.com/\***](http://cdn.iv.agacad.com/*) - tools hosting
## Test the permissions
Expected results on the browser:
Expected results with [CMD "ping" command](#user-content-fn-1)[^1]:
{% hint style="info" %}
The default port numbers used are **80** for **HTTP** and **443** for **HTTPS**.
{% endhint %}
If you are able to load all the web pages above, try to download and install the [latest Dock version manually](/getting-started/troubleshooting/unable-to-download-the-arkance-dock-via-https-agacad.com-dock.md#solution)
After installation, try to update/install the tools from the Dock
Having troubles?
1. Please make sure that your Windows user has administrator permissions to modify "ProgramData" and "AppData" folders, as well as the Windows registry
2. The mentioned URLs might be blocked by Windows firewall, network, antivirus or other third-party software
3. Reach out to for personal assistance
4. In case you get any error messages, please [send us](https://helpdesk.agacad.com/support/tickets/new) the log file from:\
C:\Users\\%Username%\AppData\Roaming\TOOLS 4 BIM\\\*REVIT VERSION\*\\**LogT4BDock.txt**
[^1]: * Open your Command Prompt (type "cmd" in Windows search)
* Enter the commands (individually): \
ping cdn.iv.agacad.com\
ping srv.softwarepotential.com\
ping api.dock.agacad.com
* Confirm that there is "0% loss" in all cases
---
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