Unable to Start a Program with an. File Extension. Symptom. When you try to launch an application. Cause. This problem occurs if the. This. behavior is generally caused by viruses one of which is Sir. Cam virus, which modifies. Cimatron It 13 1 Crack there. Dell Keyboard Serial Number. Resolution. Method 1 Fixing the association settings automatically. Download exefixxp. Desktop. Double click the file to run it. This utility fixes the exefile. Additional tip To run the utility silently without any prompts, use the. Disk-Cleaner-VeeCan_1.png' alt='Recently Run Programs Registry' title='Recently Run Programs Registry' />Open a Command window Command. C Utilitiesexefixxp. Assuming that the exefixxp. C Utilities. directory. Method 2 Fixing the association settings using Registry editor. Click Start, Run and type Command. Type the following commands one by one cdwindowsregedit. If Registry Editor opens successfully, then navigate to the following key HKEYCLASSESROOT exefile shell open command. Double click the Default value in the right pane. Delete the current value data, and then type 1 ie., quote percent one quote space percent asterisk. HKEYCLASSESROOT. In the right pane, set default to exefile. Exit the Registry Editor. If youre unable to launch Regedit. Command Prompt, try this copy regedit. Related articles. You receive an error. You Are Unable to Start a Program with an. IiB7WmgkyYk/U3FXChAChyI/AAAAAAAADGY/zLB_fBv2VSU/s1600/Rundevice.jpg' alt='Recently Run Programs Registry' title='Recently Run Programs Registry' />File Extension. You Cannot Start Programs. Mirc Torrent Scripts. Files When Your Computer Is Infected with the Sir. I suspect that Program X is writing to the registry on its startup. Many programs have a check to see if Im the default setting within their. Cam Virus. Restore the. Windows Vista, after incorrectly. Do you use the Run dialog box often in Windows If so, we offer some helpful tips for tweaking the dialogs history, or the most recently used MRU list. The best registry cleaner is Regutility, clean your pc registry.