Error 1325: PRMSTORAGE is not a valid short file name

Scenario: The installation of the Paragon program fails with the error message “PRMSTORAGE is not a valid short file name”. How do I solve this problem?

“Error 1325: PRMSTORAGE is not a valid short file name” is an error message that seems to be related to the Windows Installer (msiexec.exe).

It occurs occasionally with our installer and indicates that no drive with the letter C: is present in the respective system.

As a workaround you can create a partition C: somewhere or assign this letter to an existing partition for the time of the installation, for example to an USB stick. Despite of that the software can be installed on any drive.

Alternative solutions:

1. Run as administrator.
2. Disable antivirus and try to run installation (also as administrator).
3. Open the Registry Editor Type: REGEDIT (this will show in the Search page)

Navigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem

If the value for either the NtfsDisable8dot3NameCreation DWORD or the Win31FileSystem DWORD is not 0, right click the DWORD, choose Modify, and set the value to “0”.

KnowHow: Installation
Tags: PRMSTORAGE

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