What should I do if Win7 can't open CHM files?

Some Win7 users have difficulty opening CHM files, so how to solve these difficulties, so that users can easily open CHM files? Here are the specific solutions, let's take a look.
Recommended: Win7 installed optimization download
Solution:
1. Right click on the CHM file, select properties

2. Under the General tab, there is a "Security", click on the back [Unlock] button. Skip if there is no such button.

3. If there is no [Unlock] button, copy the following into Notepad, and then click [File] [Save As].
REGEDIT4 [HKEY_LOCAL_MACHINESOFTWAREMicrosoftHTMLHelp] [HKEY_LOCAL_MACHINESOFTWAREMicrosoftHTMLHelp1.xHHRestrictions] & ldquo; MaxAllowedZone & rdquo; = dword: 00000003 & ldquo; UrlAllowList & rdquo; = & ldquo; & rdquo; [HKEY_LOCAL_MACHINESOFTWAREMicrosoftHTMLHelp1.xItssRestrictions] & ldquo; MaxAllowedZone & rdquo; = dword: 00000003 & ldquo; UrlAllowList & rdquo; = & ldquo; & rdquo ;

4. Save as a .reg file and double-click Import.



Win7 users who can't open CHM files, try this solution recommended by Xiaobian for everyone, I believe it will help you solve your problem.