This method is applied, if the mistake message emerges because the account SYSTEM does not have the admission for a Full Control of the catalog, in which you are endeavoring to install the packet installer Windows.

Sometimes, however, you may encounter various errors when using NMM, such as NMM a problem occurred during install, NMM is not set up to work with Skyrim, NMM not opening, and the one discussed here. (It can be applied only for Windows 2000 and Windows XP). Nexus Mod Manager is free and open software that can help you download, tweak and save your games.

Provide a full access to the account SYSTEM.

This method is applied when the mistake message emerges because the drive containing the catalog, in which you are endeavoring to install the Windows Installer packet, is located on a removable carrier.

Install the packet to a drive that is not a removable carrier.

This method is applied when you receive a mistake message while endeavoring to install a Windows Installer packet to an encrypted catalog.

Install the packet in an unencrypted catalog.

To deal with this issue, endeavor one of the consecutive methods depending on the cause of the problem. To ensure that the Windows Installer Service is properly installed and configured, it is recommended that users install the file InstmsiA.exe on Windows 95/98/Me or InstmsiW.exe on Win NT systems. The mistake message emerges because the Windows Installer service uses the account SYSTEM to install the software.

The account SYSTEM does not have admission for the full control of the folder, in which you endeavor to install the Windows packet installer.

The disk containing the catalog, in which you endeavor to install a Windows Installer packet, is a removable hard drive. Several Mods downloaded to NMM but says 'A problem occurred during install.' Tech Support Not sure what to do or how to fix it, but after I downloaded about 10 mods, half of them will not install.

The catalog is encrypted, in which you endeavoring to install the packet of Windows installer.

If you depress OK in the message box, the installation will be canceled. “Error 1603: during the installation, a fatal error occurred”. When endeavoring to install the Microsoft Windows Installer, you may receive the consecutive mistake message:

A problem occurred during install nmm