1. Browser security level is too high, computer security level is high: Win7.0, Vista security level is higher than winxp. The security settings of IE8.0 and IE7.0 are different from IE6.0.

2. The related anti-virus software or hard disk protection program prevents the control from being written into the system disk. At this time, the registration was successful, but the specific dll could not be written.

3. Write succeeded, but failed to write to the registry, and the installation will be re-registered every time it runs.

4. When installing the operating system, the related dll is lost, which makes it impossible to download, such as jscript.dll.

Solution:

1. For those users with high browser security level, you can lower the browser security level ... This method has a low solution rate.

Internet Options-Security Settings-Whether the download signature ActiveX control is set to "Disabled" and changed to "Prompt".

2. Manually register the control.

Semi-manual registration (depending on whether the control has been downloaded locally), [Start], [Run], enter regsvr32+"dll path ":regsvr32" c: \ Windows \ downloaded program files \ tbappldr.dll "(note that different ie controls are located at different addresses).