1. Software problems (especially right-click third-party add-ons) when installing some software will appear explorer.exe error. 2. explorer.exe program itself to check the file size of explorer.exe, under normal circumstances should be displayed as 237k or 238k, if the size is inconsistent, you can copy an explorer.exe file from other machines to the machine, call task management , access the explorer.exe process, and then create a new task to copy the new file to the system disk WINNT directory. 3. May be caused by a virus (wc98pp.dll) network protocol processor - e-book compilation tool Web Compiler related. The wc98pp.dll file itself has no effect. This file is available on many computers. However, when the explorer.exe error occurs, deleting this file can solve the problem and then search the registry for related key values. Usign.dll, some people mentioned that this file is similar to wc98pp.dll two files. Deleting these two files can clear IE and keep jumping out of small ads. This file was not found on the company's computer. 4. Other reasons The computer runs a program for too long, such as reading data, especially the data of the CD or external device, there will be an error of explorer.exe, the prompt is the same as above. 5. System kernel error In this case, I can't solve this problem temporarily and reinstall the system. 6. Memory problems Some people solved this problem by replacing the memory, so this should be a reason, but if this problem is more troublesome, so consider the first few reasons. 7. Windows upgrade caused everyone know that we are using Piracy xp, since it is pirated, there will be a variety of errors. Microsoft is not sb, it will definitely solve some problems to punish us, so it is recommended that you do not automatically update the Internet, and turn off automatic updates. 8. Explorer errors caused by system beautification factors use unreasonable themes or oversized topics or Use a too large icon. The use of themes and icons consumes system resources is a well-known thing. When changing the theme, it is found that using a theme with a volume of 5 megabytes or more, an Explorer error occurs more than a 1-2 megabyte theme. Designed themes are basically free of Explorer errors. In addition, the use of large icons (such as more than 100 k) may also lead to system errors. Solution: When choosing a theme, it is best to choose a single style theme. Such a theme is generally about 1-3 megabytes in size. It's best not to use the large icon source sky, especially those icons that are commonly used in systems (such as folders, notepads, etc.). The icons that come with Windows are only 1k or even hundreds of bytes. If you change the icon to a few hundred kb, there will be problems. After the PC is turned on, an explorer.exe dialog box always appears, saying that explorer.exe needs to be closed when it encounters a problem. Click “Close”, the graphics and words on the display disappear, after a few seconds, the screen will resume without restarting. Solution To solve this problem, click "Start" = "Run" = "Enter CMD", enter the "Command Line Prompt" window, enter REGSVR32 URLMON.DLL, press Enter to restart the system, and then enter the "Tools" of IE --> "Internet Options" --> "Programs", click the "Reset Web Settings" button (or reload IE). Click "Start" --> "Run", enter: rundll32.exe setupapi, InstallHinfSectionDefaultInstall 132 %windir%\\\\inf\\\\ie.inf, you can quickly reload IE after the carriage return. Precautions The above operations are risky. Please backup important data before operation and use it according to the operational proficiency.