Solve the problem that chm cannot be opened

Frequently Used Method to Solve the Problem of chm cannot be opened: www.2cto.com recently encountered a strange problem that the chm file of the local machine is uploaded to the (using FyUpload) space and the link cannot be opened after downloading. I was puzzled, wondering if the file was damaged, and then I checked the file size. That's right .. So I searched for the following on the Internet, and some people encountered such a problem. Solution: click the file, right-click the file, and choose Properties> unlock! If not? If your Windows XP cannot open files in chm format, 1. If the prompt is: Internet Explorer cannot be linked to the webpage you requested or the page cannot be displayed after it is opened ". Download jjhd.zip and run it. Or right-click the CHM file you want to open, and a "unlock" option will be added to the attribute below. After you click it, it will be displayed normally. Www.2cto.com jjjhd. reg content REGEDIT4 [HKEY_LOCAL_MACHINESOFTWAREMicrosoftHTMLHelp] [Rule] "MaxAllowedZone" = dword: 00000003 "UrlAllowList" = "" [Rule] "MaxAllowedZone" = dword: 00000003 "UrlAllowList" = "" The above content is copied to a text file, and then the file name suffix is changed. reg, and then click 2. If the prompt is: "You cannot open the file mk: @ MSITStore :****. chm "may cause this fault because it is Hhctrl in your system. ocx files are lost or are Hhctrl. if ocx is overwritten, you can copy one from the same computer or the installation disc and register Hhctrl again. ocx file: The procedure is as follows: Step 1: Exit all running programs and click Start> program. Step 2: In the run dialog box, type "regsvr32 c: windowssystemhhctrl. ocx "press enter, or" regsvr32/I hhctrl. ocx "the message" DllRegisterServer succeeded "is displayed. restart the computer. 3. Other Method 1: Go to "language and Region"-"region options" from the control panel of windows. if the region is not Chinese, change it to Chinese 2, it is simpler to change the file name to E (. chm), copy it to a root directory, open it and check if it doesn't work. Please download it again. Sometimes there is a problem with the download process and check whether it is OK 3. If most CHM cannot be opened, try registering regsvr32 itss again. dll 4, start -- run -- Enter "regedit", open the registry, find the following branch: Create a DWORD key MaxAllowedZone under the keystore, and obtain the value as 3. Try 5. If there is no keystore installed or you have deleted the hh.exe file, you can check under Windowssystem32. In this case, you can copy hh.exe from another computer, put it in the directory above, and double-click a chm file so that you can select the C: windowshh.exe program. In this case, the association between the chmfile and hh.exe is restored. 6. Delete hh. dat ", in the directory Documents and Settings % username % Application DataMicrosoftHTML Help, this file contains some content that may cause error 4, start -- run -- Enter" regedit ", open the registry, find the following branch: Create a DWORD key MaxAllowedZone under the supervisor and obtain the value as 3. Try it. If there is no supervisor installed or you have deleted the hh.exe file, go to Windowssystem32 and check it. In this case, you can copy hh.exe from another computer, put it in the directory above, and double-click a chm file so that you can select the C: windowshh.exe program. In this case, the association between the chmfile and hh.exe is restored. 6. Delete hh. dat ", in the directory Documents and Settings % username % Application DataMicrosoftHTML Help, this file contains some content that may cause errors