Formatters & Code
Windows Autopilot CSV Validator
Check Windows Autopilot hardware-hash CSV files locally. Inspect headers, encoding and duplicates, then combine eligible exports into device batches.
Device exports & upload profile
Up to 20 files, 10 MB each, 50 MB total. Original three-column exports and optional Group Tag / Assigned User columns are checked in order.
Device file preflight
| File number | Device records | Columns | Encoding assessment |
|---|
File findings
Combined import batches
Available only when there are no blocking file or encoding findings. Each batch has at most 500 devices. Values are preserved; inspect the file as plain text before use.
File errors, duplicate devices or account/service problems?
File findings identify local formatting and identifier problems. Repeated identifiers may represent the same device, but this checker cannot see any tenant registration. If the file passes and registration fails, inspect the exact Intune error, tenant ownership, permissions and Microsoft service health. An outage is not repaired by changing the CSV.
Results
What the result means
Select or drop your original device CSV exports. The checker reads their bytes locally, checks the header layout and record structure, and compares serial numbers and hardware hashes across the selected files. Review the findings using file numbers and CSV record numbers. Eligible exports can be combined into batches of up to 500 devices, preserving identifiers and emitting plain ASCII without a Unicode marker. No record is silently deduplicated or repaired. Download the diagnostic report separately from import batches. A clean file cannot establish hash authenticity, tenant ownership, account permissions or service health; investigate those in Intune if registration still fails.
Related tools
Guides
Questions
Can this fix an Intune or Microsoft service outage?
No. It checks local files only. A registration failure may require investigation of tenant ownership, permissions or service health.
Can I merge several original hardware-hash exports?
Yes, if the selected files pass blocking checks. The tool preserves values and creates import batches of at most 500 device records. Duplicates need manual resolution.
Does a valid Base64 hash prove the device is valid?
No. The checker recognises encoding syntax, not the internal hardware record or its authenticity. Registration remains an account-side operation.