Powershell runs fine manually but not in Task Scheduler

Hi,

When a PowerShell script works manually and works when you click Run in Task Scheduler, but fails at the scheduled time, the root cause is almost always the non‑interactive environment used at 5 AM.

Here are the three most common causes:

✔️ 1. Different environment at scheduled time

At 5 AM the task runs with:

• no user profile
• no PATH customizations
• no mapped drives
• no loaded modules unless imported explicitly

If your script depends on any of these, the output becomes corrupted.

✔️ 2. Use full paths

Always call PowerShell explicitly:

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NoProfile -ExecutionPolicy Bypass -File "C:\Scripts\YourScript.ps1"

And avoid relative paths inside the script.

✔️ 3. Encoding issues

Some scripts produce “garbage” output when no console is attached. Force UTF‑8:

[Console]::OutputEncoding = [System.Text.Encoding]::UTF8