The application symantec endpoint protection installer can t be opened

If you do disable a protection temporarily, reenable it to ensure that the computer remains protected.

You can also run the Symantec Diagnostic tool to help solve an issue. See: Troubleshooting and checking the health of the Windows client with SymDiag

The following table lists issues that you may have when a protection is enabled. First check with your system administrator about a possible cause and solution.

Protection type Auto-Protect Problems installing an application. Auto-Protect may cause the following issues:

Auto-Protect might block you from opening a document. For example, if you open a Microsoft Word that has a macro, Auto-Protect may not let you open it. If you know that the document is safe, create an exception.

Auto-Protect may warn you about a virus-like activity that you know is not the work of a virus. For example, you might get a warning when you install new computer applications. If you plan to install more applications and you want to avoid the warning, create an exception.

Auto-Protect may interfere with Windows driver replacement. Auto-Protect might slow down the client computer.

If Auto-Protect causes a problem with an application, it is better to create an exception than to disable the protection, even temporarily.