Symptom

If you log in to the C/S client after the IVS platform is upgraded, the C/S client will fail to be upgraded in either of the following scenarios:

• The "Downloading updates..." message is displayed all the time, as shown in Figure 1.
• The message "File download error due to MD5 verification failure" is displayed, as shown in Figure 2.

Figure 1 Downloading updates

Figure 2 File downloading error

Possible Cause

The agent server for the Internet Explorer is incorrectly configured.

Solution

1. Log in to the OMU portal through the PC where the upgrade failures.
   • If you can successfully log in to the OMU portal, contact Huawei technical support engineers.
   • If you cannot log in to the OMU portal, go to the next step.
    NOTE:

   The C/S client will access the URL of the OMU portal during the upgrade.

2. Open Internet Explorer, choose Tools > Internet Options.
3. Click LAN settings on the Connections tab page, and check whether an agent server is used.
   • If no agent server is used, contact Huawei technical support engineers.
   • If an agent server is used, go to the next step.

4. Select Bypass proxy server for local addresses.
5. Click Advanced. Add the network segment where the OMU portal locates to Exceptions.
6. Click OK to finish the agent server setting.
7. Check whether the fault is rectified.

   If the fault is rectified, no further action is required. If the fault persists, contact Huawei technical support engineers.