Win7 system open PDF file appears associated error how to do

            What should I do if the Win7 system opens a PDF file with an associated error? Each software of win7 system has a corresponding open mode, they are all related to each other. If the choice is wrong, it will not open.
Solution:
1. Click the Start menu — Run, and enter "ldedit" in the run column, press Enter;
2, enter the Registry Editor, click to open : HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerFileExts.pdf;
3, under the "OpenWithList", under the registration item, except the "default" & rdquo; registry keys in the right window are deleted, and finally delete "UserChoice" ; Register the item;
4, after deleting the registry editor by deleting the above operation, and then double-clicking the file you need to open, you can choose the opening method you need.
The above is the introduction of all the solutions to the problem of opening the PDF file in the Win7 system. By using the above methods, there will be no more related errors, I hope to help friends in need!