Error Code 0x80040105 Summary
The error code 0x80040105 is commonly associated with issues related to Exchange ActiveSync in Microsoft Exchange Server environments, particularly when trying to synchronize a device or application with an Exchange mailbox. This error often indicates that there’s a problem at the server level preventing a successful connection between the mobile device and the Exchange server.
Typical causes include misconfigured settings on the client side (such as incorrect URL or domain information), server-side restrictions or policy violations, or issues related to certificate errors if SSL/TLS is involved. Resolving this issue often involves verifying that all necessary server settings are correctly configured for ActiveSync access and ensuring there’s no network interference blocking communication between the device and the Exchange server.
The exact resolution steps can vary based on specific circumstances but generally involve checking server-side configurations, confirming client device settings are correct, validating any required certificates or certificate chains are present without errors, and troubleshooting through common connectivity issues like firewalls or proxy servers that might be interfering with ActiveSync traffic.
Description of Error Code 0x80040105 and Common Occurrence Areas
Error 0x80040105 can occur in various contexts within an Exchange environment, but it is most commonly encountered when attempting to configure a mobile device (such as smartphones or tablets) for synchronization with Microsoft Exchange Server via the Exchange ActiveSync protocol. The error suggests that there’s an issue preventing the client from establishing a connection with the server, which could be due to multiple factors.
One common scenario where this error might arise is during initial setup of a new mobile device for syncing email and calendar data through Exchange ActiveSync. If the user enters incorrect information such as the wrong domain or server URL in their device’s account configuration settings, they may receive this error because the client cannot reach the correct server endpoint to begin synchronization.
Another frequent occurrence is when corporate IT policies enforced by the Exchange administrator prevent certain types of devices from connecting based on compliance requirements. For instance, if a company mandates specific security measures like requiring device encryption or installation of management software before allowing ActiveSync access, an unauthorized device attempting to connect will encounter this error.
Network-related issues also play a significant role in triggering 0x80040105 errors. If the network path between the mobile client and Exchange server is obstructed by firewalls or proxies that block necessary ports (such as TCP port 443 for HTTPS connections), synchronization attempts will fail, resulting in this error code.
Furthermore, certificate issues can lead to 0x80040105 errors. If the SSL/TLS certificates used by Exchange Server are self-signed or issued from an untrusted authority, devices may reject these during initial connection attempts due to security concerns, leading to a failed handshake and resulting in this error.
Finally, incorrect settings on either the client device or server-side configurations can cause synchronization issues. Misconfiguration of ActiveSync policies in Exchange Server or enabling/disabling features like Basic Authentication without properly adjusting related parameters may prevent devices from syncing correctly.
To sum up, 0x80040105 generally surfaces when there’s a communication barrier between the mobile device and Exchange server due to incorrect configurations on either end, network obstacles preventing proper connection establishment, or certificate mismatches hindering SSL/TLS handshake processes necessary for secure exchanges.
Howto solve error code 0x80040105
- Verify that the URL used in your account setup matches exactly what is configured in Exchange Server’s ActiveSync settings.
- Check if your organization has specific policies enforced through Exchange that could be blocking access, such as device compliance requirements or restricted IP ranges.
- Ensure there are no firewall rules or proxy configurations on your network that might interfere with traffic destined for the Exchange server over ports necessary for ActiveSync (typically port 443).
- If applicable, review and validate all SSL/TLS certificates involved in establishing a secure connection between your device and Exchange Server. Ensure they are properly issued by trusted authorities and correctly installed.
- Consider temporarily disabling any antivirus software or mobile management apps that might be interfering with ActiveSync synchronization processes on the client side.
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