diff --git a/scripts/Register-BakRestTask.ps1 b/scripts/Register-BakRestTask.ps1
index a432c9f..82c846b 100644
--- a/scripts/Register-BakRestTask.ps1
+++ b/scripts/Register-BakRestTask.ps1
@@ -19,6 +19,19 @@ $ErrorActionPreference = "Stop"
 $repoRoot = Split-Path -Parent $PSScriptRoot
 $pythonExe = (& python -c "import sys; print(sys.executable)").Trim()
 
+function Resolve-TaskUserName {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Name
+    )
+
+    if ($Name.StartsWith(".\")) {
+        return "$env:COMPUTERNAME\$($Name.Substring(2))"
+    }
+
+    return $Name
+}
+
 if (-not $pythonExe -or -not (Test-Path -LiteralPath $pythonExe)) {
     $pythonCommand = Get-Command python -ErrorAction Stop
     $pythonExe = $pythonCommand.Source
@@ -79,6 +92,7 @@ if ($RunAsStoredCredentials) {
     if (-not $UserName) {
         $UserName = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
     }
+    $UserName = Resolve-TaskUserName -Name $UserName
 
     $securePassword = Read-Host -Prompt "Password for $UserName" -AsSecureString
     $passwordPtr = [Runtime.InteropServices.Marshal]::SecureStringToBSTR($securePassword)