To connect qtpwith testdirector8.0, I installed the tdpluginssetup.exe plug-in. I didn't expect it to be incompatible with VSS. When VSS is started, an error prompt box is displayed, saying "Microsoft Windows User Shell has a problem and is about to close ". View the detailed information of this error and display modname: ssapi. dll, which is a DLL file of VSS. It is estimated that when the plug-in is installed, the Registry is changed, and VSS cannot be started. The solution to this problem is not only simple, but also ridiculous. I didn't modify the level of the system registry, so I found another driver.ProgramBackup Software: Driver genie. When the software is installed, the Registry is automatically modified. After installation, VSS can be started properly. This method is too technical, and we hope that someone else can solve this problem.