Win10 10074 preview version of the start menu can not be opened solution

Previously, many Win10 users said that they upgraded the Win10 system to the 10074 preview and found that the Start menu could not be opened. I thought that the problem could be solved automatically by installing Windows Update, but it still didn't work. So how do you deal with this?
In fact, this phenomenon is caused by errors in the language pack. Let's take a look at the specific solution.

Workaround:
Xiaobian found that after the language pack problem, install the English (United States) language pack in the settings and regional options - for Windows Technical Preview based on x64 system - (KB3061055) [ ,null,null,3],en-US_LP], you can solve the problem, the long-lost start menu is back.
By the way, remind everyone that downloading and installing the KB3061161, KB3061162, KB3038314 and other patches can not open the start menu, but the taskbar can not be opened. Trying to update the graphics card driver is also not possible.
Some users are still using the earlier Win10 9926 preview, which has the status of enabling the administrator account to open the start menu, and we need to modify the group policy to solve the problem.