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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallIf an Outlook PST file is corrupted, start with Microsoft’s built-in Inbox Repair Tool, SCANPST.EXE. It can diagnose and attempt to repair errors in Outlook data files. If that does not meet your needs, Stellar offers desktop software and an online repair service—but their features and limits are vendor-published claims, not independently verified repair results.
How do I repair a corrupted PST file?
- Preserve the original. If possible, make a copy of the damaged PST and work on the copy. Keep the original unchanged while you attempt repair.
- Try Microsoft’s Inbox Repair Tool. Microsoft documents SCANPST.EXE for diagnosing and repairing errors in Outlook data files. Microsoft describes its role this way: “The tool only looks for errors (corruption), and if there are any, gives you the opportunity to allow the tool to fix those errors.” See Microsoft’s SCANPST guidance for the applicable instructions.
- Check the result in Outlook. Open the repaired or recovered data and verify the folders and items you need. Do not discard the original until you have checked the result.
SCANPST works on Outlook data files; Microsoft says it does not connect to or analyze data in an Exchange mailbox. Microsoft also cautions that items may not be recovered if they were permanently deleted or corrupted beyond repair. A repair attempt is not a guarantee of complete recovery.
Stellar desktop vs. online PST repair
Stellar describes two routes: desktop software that processes a file locally, and a browser service that requires uploading the PST. The following comparison reflects Stellar’s published product and service information, not hands-on testing.
| Consideration | Stellar desktop | Stellar online |
|---|---|---|
| Where processing happens | Stellar says repair is performed locally on the computer. Stellar desktop product page | The PST is uploaded to Stellar’s service for online repair. Stellar online service page |
| File-size limit | Stellar advertises no file-size limit. | Free plan: one file up to 500 MB. Premium: one file up to 5 GB. |
| Installation | Requires downloading and installing software. | No installation; Stellar says it works in modern browsers. |
| Preview and output | Trial materials say you can scan and preview recoverable mailbox items. The product page lists multiple save formats; check the current edition’s exact options. | Stellar says you can preview the recovered folder structure and item count in the browser before downloading. |
| Published price and retention | The product page displayed $79 for Professional when reviewed in 2026; this is a price snapshot, not a guaranteed current price. | Stellar listed Premium at $29.99 per file for a PST up to 5 GB. Repaired files are available for 24 hours on Free and 48 hours on Premium, according to the service page. |
Online pricing, limits, retention windows, desktop pricing and product capabilities can change. Confirm the current terms on Stellar’s pages before uploading or purchasing.
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#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
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- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Which Stellar option fits your PST?
Choose desktop when local processing or file size matters
Stellar’s desktop page describes local repair and advertises no file-size cap. That makes desktop the more relevant Stellar route if your PST exceeds the online service’s stated 5 GB maximum, or if you do not want to upload the file. It does require software installation. Stellar lists support for Outlook 2024, 2021, 2019, 2016 and earlier versions; check the current compatibility information for your Outlook version and system before installing. The vendor’s support listing is available at Stellar’s Outlook compatibility article.
Choose online when avoiding installation is the priority
The online service may suit a smaller PST when you prefer a browser workflow. The free plan is limited to one file up to 500 MB. For a file over 500 MB and up to 5 GB, Stellar lists Premium at $29.99 per file. Because this route uploads the PST, consider whether its contents are appropriate to send to an online service and review Stellar’s current terms before proceeding.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Use the preview as a check, not proof
Stellar describes preview features for both routes. Online, the service says it shows recovered folder structure and item count before download; desktop trial materials say recoverable mailbox items can be previewed. Inspect what is visible before saving or paying, but a preview does not establish that every wanted message or attachment was recovered.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should I try when ScanPST cannot repair my PST?
Keep the damaged original and consider whether a recovery tool is appropriate for the file and your privacy requirements. Stellar is one option described here, but the available product information does not establish that it will recover a particular file or outperform SCANPST. There is no independent comparative success-rate figure in the sources cited here.
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Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
- Choose a copy of the PST rather than risking the only original, where possible.
- Match the route to file size: Stellar lists online repair up to 5 GB and advertises no desktop file-size limit.
- Review the preview and save or download the recovered output if it contains the material you need.
- Open the resulting data in Outlook and check the relevant folders and items before relying on it.
Stellar’s advertised capabilities, limits, pricing and retention periods are the company’s own statements. They should not be read as a guarantee of success, complete recovery or privacy beyond the vendor’s stated terms.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
