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PCVITA software to recover Outlook cached contacts from NK2 and DAT files
Outlook Cache Contact Recovery Tool
PCVITA Outlook Cached Contacts Recovery Tool recovers autocomplete contacts from NK2 files of Outlook 2007 and below and from DAT files of later Outlook versions. Cache contact recovery software loads the file for you, previews every name and email address and saves them to a new or existing PST file, vCard, CSV, Google CSV, PDF, MSG, HTML or DAT. Free demo exports 15 contacts per file.
- Input
- NK2 and DAT cached contacts files, added by hand or auto detected
- Output
- Contact files in PST, vCard, CSV, PDF, MSG, HTML, DAT or Google CSV
- Recovers
- Names, nicknames and email addresses from the autocomplete list
- Control
- Preview, search and sort first, then export all or selected contacts
Auto detect adds your cache file without a manual search. Export Selected saves only the contacts you tick. See all features. Need the saved Contacts folder of a PST file instead? Open the Outlook to vCard Export Tool.
How Outlook Cached Contacts Recovery Works
Your NK2 or DAT file goes in on one side. Contact files come out on the other, in the format you select, with names and addresses kept.
NK2 or DAT Cache File
Older Outlook versions use NK2, later versions use DAT
- NK2 file for cached contacts
- DAT file for cached contacts
- Corrupt or deleted cache files
PCVITA Cached Contacts Recovery
Works on your Windows machine
- Auto detect storage location
- Preview, search and sort
- Save everything or ticked contacts
Usable Contact Files
Contact files in the format you select
- PST file for Outlook
- CSV file for Excel
- vCard file for phones and email programs
- 1AddSelect your cache file or let the tool find it.
- 2PreviewCheck the recovered contacts in the preview pane.
- 3ExportSave all contacts or only the ones you ticked.
Recover Outlook Cached Contacts in 6 Steps
Six screens of the cache contact recovery tool from the first click to your saved contact files. Select a step to see its screen. Open the full walkthrough in the Software Guide.
Step 1. Open the Recovery Tool
Install the tool on Windows and open it from the Start Menu to reach the main screen.
Step 2. Add an NK2 or DAT File
Press Add File and select Add Files or Add Folder to load an NK2 or DAT file. Outlook 2007 and below create an NK2 file for cached contacts. Later versions create a DAT file.
Step 3. Auto Detect the Storage Location
Select Auto detect storage location and the tool adds the cached contacts file automatically. Use this option when you do not know the folder of your NK2 or DAT file.
Step 4. Preview the Recovered Contacts
The added file shows its recovered contacts in the preview pane. DAT files and NK2 files both open this way, so you check every name and address before you save.
Step 5. Select the Contacts to Export
Press Export on the right to save all data. Tick the contacts you want and press Export Selected to save only those cached contacts.
Step 6. Choose the Format and Save
Select New PST, Existing PST, vCard, CSV, Google CSV, PDF, MSG, HTML or DAT, set the destination and press Export. Press OK at the completion prompt, then open the destination folder to see your contact files.
Free demo, no licence needed to preview your contacts and export 15 items per file.
Outlook Cache Contact Recovery Features
What PCVITA software does with your cache file, grouped by task.
Exports Cached Contacts to a New or Existing PST
Recovered contacts go into a fresh PST file or into a PST file you already use.
Save to a New PST File
Select PST and Create a Single PST to collect every recovered contact in one file.
Add to an Existing PST
Existing PST option adds the recovered autocomplete addresses to a PST file you already have.
Default Contacts Folder
Tick Export into Default Contacts Folder to place the contacts in your Outlook Contacts folder or browse to a destination.
Save as MSG Files
MSG option stores the recovered cached contacts as Outlook message files.
Exports Cached Outlook Contacts to CSV, vCard and Google CSV
Contact files for Excel, phones and online accounts come from the same recovered list.
CSV for Excel
Save a CSV file, then load it into Excel or into an email program that imports CSV files.
Google CSV Format
Google CSV sits next to CSV as its own export option, so you choose the file type before you import.
vCard Versions 2.1, 3.0 and 4.0
Settings let you select the vCard version your phone or email program needs.
Saved vCard Settings
Save your vCard settings, select the destination path and press Export.
Creates PDF, HTML and DAT Files From Recovered Contacts
Reports, web pages and Outlook cache files come from the same recovered contacts.
Single PDF for All Contacts
PDF export creates a single PDF for all cached contacts from the NK2 or DAT file.
HTML for Web Pages
HTML export saves the contacts in a format you can place on a web page.
Export to an Existing DAT File
DAT option exports NK2 and DAT contacts into an existing Outlook cached contacts file.
Destination Screen for Every Format
Every format opens a destination screen where you select the save folder.
Previews, Sorts and Reports Before You Save
Check the recovered names, narrow the list and keep a record of the export.
Preview Before Export
Contacts show in the preview pane as soon as the file loads, DAT and NK2 alike.
Sort and Search
Sort by Display Name, Nickname or email address, arrange contacts alphabetically and search the list with the search box.
Export Selected or All
Export all data in one press or tick contacts and export only those.
Success and Fail Counts
Counts appear after the export. Save stores a CSV report.
No Size or Contact Limit
Full edition recovers NK2 and DAT files with no file size or contact number limit.
See these options on your own file. Free demo previews your contacts and exports the first 15 items in a file.
Why Outlook Cached Contacts Need a Recovery Tool
Four facts from Microsoft about the autocomplete list and what PCVITA cache contact recovery does with them.
- 1
Outlook 2007 Keeps the List in an NK2 File
Microsoft documents that Outlook 2007 stores the autocomplete stream in a file named after the profile with the .nk2 extension. PCVITA tool opens that NK2 file and shows every name.
- 2
Outlook 2010 and 2013 Hide It in the Mailbox
Later versions get the list from a hidden message called IPM.Configuration.Autocomplete in the Inbox of the delivery store. Your contacts sit in that stream, not in the Contacts folder.
- 3
The DAT File is a Local Cache
Outlook 2010 and 2013 can cache the list in an autocomplete .dat file under RoamCache. PCVITA tool loads DAT files from that folder or finds them for you.
- 4
Outlook Saves the List Only on Shutdown
Outlook keeps the list in memory and saves the structure when it closes. Close Outlook before you load or change a cache file, so your recovered contacts match the latest saved list.
Prepare Before You Recover Cached Contacts
Six checks before your first recovery. Work down the list, then open the tool.
- Close Outlook before you load a cache file. Microsoft notes that Outlook can overwrite a changed autocomplete stream when it shuts down.
- Copy your cache file to a safe folder before you export into an existing PST or DAT file.
- Know where the file sits or let auto detect find it. Folder paths for both file types are in the file locations box below.
- Install and configure Microsoft Outlook on the machine. PCVITA tool needs a properly configured Outlook installation.
- Check your Windows machine for 100 MB free disk space and 2 GB RAM.
- Test the free demo on your file before you buy. Download the Outlook Cached Contacts Recovery demo, preview your contacts and export 15 items per file.
System lines match the Specifications table below. File locations follow the Microsoft page linked in the Sources.
NK2 and DAT Recovery Tool Pricing
Free demo first, then one licence. Both Windows editions share every option, only the export count differs. Mac edition costs $29 and the compatibility FAQs cover it.
Demo Edition
Free
Preview all contacts, export 15 items per file
- Export limit15 items per file
- FeaturesAll
- LicenceNot needed
Version 8.0, 32.6 MB, Windows
Full Edition
$49 one licence
Export every contact from every NK2 and DAT file you load
- Export limitNone
- FeaturesAll
- DeliveryEmail after payment
30 Days Money Back*, Safe & Secure checkout
Included in both editions The demo and the full edition share every option, only the export count differs
- Load NK2 and DAT Files
- Auto Detect Storage Location
- Preview and Search
- Sort by Name, Nickname or Email
- Export All or Selected Contacts
- New and Existing PST Output
- vCard, CSV and Google CSV Output
- PDF, MSG, HTML and DAT Output
NK2 and DAT Recovery Specifications
Version, system needs and recovery limits in one place.
| Version | 8.0 |
|---|---|
| File size | 32.6 MB |
| Windows versions | Windows 10 (32 and 64 bit), 8.1, 8, 7, Vista, 2000, 2003, 2008 and 2012 |
| Hardware | Intel Core 2 Duo E4600 2.40 GHz processor, 2 GB RAM, 100 MB free hard disk space |
| Prerequisite | Microsoft Outlook installed and configured |
| Free demo limit | Preview of all contacts, export of 15 contact items per file |
| Delivery | Email with the download link and the activation key after payment |
| Input files | NK2 files (older Outlook versions up to 2007) and DAT files (later versions) |
|---|---|
| File location | Folder paths in the file locations box below or the auto detect option |
| Contact details | Display name, nickname and email address, sorted alphabetically or by field |
| Output formats | PDF, MSG, HTML and DAT plus new PST, existing PST, CSV, Google CSV and vCard (2.1, 3.0 and 4.0) |
| Export modes | Export for all data, Export Selected for ticked contacts |
| Search and preview | Preview pane with a search box before export |
| Report | Success and Fail counts with a Save option for a CSV report |
| Limits | No file size or contact number limit in the full edition |
Outlook Contact Export vs PCVITA NK2 and DAT Recovery
Microsoft’s own contact export next to PCVITA tool, so you can compare both routes for your data.
| Point | Outlook Import/Export Wizard | PCVITA Tool |
|---|---|---|
| What it exports | The Contacts folder you select under your account | Autocomplete contacts from NK2 and DAT files |
| Where the data sits | Contacts folder of your data file | Autocomplete stream, an NK2 file or a DAT cache |
| File formats | CSV, as Microsoft describes the export | PST files first, then vCard, CSV and more |
| Preview before saving | Open the CSV in Excel after the export | Preview pane with search and sort before export |
| Contact selection | One Contacts folder at a time | Export all or tick selected contacts |
| Finish message | No message when the export completes | Completion prompt with Success and Fail counts |
| Price | Included with Outlook | Free demo, full edition $49 |
Contact export facts come from Export contacts in Outlook (Microsoft Support). Autocomplete storage facts come from Nickname cache (Microsoft Learn). Tool facts come from the Features and Specifications sections of this page.
Where Outlook Keeps the Autocomplete List
- Outlook 2007 saves the list in a .nk2 file named after the profile, in %APPDATA%\Microsoft\Outlook.
- Outlook 2010 and 2013 get the list from the hidden message IPM.Configuration.Autocomplete in the Inbox of the delivery store.
- Outlook can keep a local .dat copy of that list in %USERPROFILE%\AppData\Local\Microsoft\Outlook\RoamCache. Microsoft calls it a cache only.
- Outlook saves the list when it shuts down, so close Outlook before you load the file.
- Use the auto detect option in PCVITA tool when you cannot find the file yourself.
Open the Software Guide for the add file and export screens, one format at a time.
Sources for Outlook Cache File Facts Microsoft pages behind the file locations and export steps on this page
- Microsoft LearnNickname cache (autocomplete stream)
- Microsoft SupportExport contacts in Outlook
Outlook Cached Contacts Recovery FAQs
Questions users ask before and during an NK2 or DAT recovery, grouped by topic.
Working and exports How the tool behaves during the recovery
How does the Outlook cached contacts recovery tool work?
Six steps recover cached contacts from your cache file.
- Step 1. Open PCVITA cache contact recovery from the Start Menu.
- Step 2. Press Add File and select Add Files or Add Folder.
- Step 3. Select Auto detect storage location if you do not know the folder.
- Step 4. Preview the recovered contacts in the preview pane.
- Step 5. Press Export or tick contacts and press Export Selected.
- Step 6. Select the format, set the destination and press Export.
Where is the NK2 file for Outlook cached contacts?
Outlook 2007 keeps it in %APPDATA%\Microsoft\Outlook. Microsoft documents that the file carries the profile name with the .nk2 extension. Later Outlook versions use a hidden mailbox message and a DAT cache in %USERPROFILE%\AppData\Local\Microsoft\Outlook\RoamCache. PCVITA tool finds the file for you with its auto detect option.
What is the difference between an NK2 file and a DAT file?
Your Outlook version decides. Outlook 2007 and below create an NK2 file for cached contacts. Later versions create a DAT file. PCVITA cache contact recovery loads both file types and previews them the same way.
Can the tool recover contacts from a corrupt or deleted NK2 file?
Yes. PCVITA tool recovers contacts from NK2 files that are deleted or corrupt and saves them to PST and other formats. Add the file with Add File or let Auto detect storage location add it.
How do I export Outlook contacts to Excel or CSV?
Save them as a CSV file and open that file in Excel. For your Contacts folder, Microsoft describes File, Open & Export, Import/Export, Export to a file, Comma Separated Values. For autocomplete contacts, load your cache file in PCVITA tool, select CSV, set the destination and press Export.
How do I export Outlook contacts to vCard?
Select vCard as the export format. PCVITA software saves recovered cached contacts as vCard version 2.1, 3.0 or 4.0 from the vCard settings. Contacts stored in a PST file need the Outlook to vCard Export Tool instead.
Can I preview and select cached contacts before saving?
Yes. Preview pane lists every recovered contact. Sort it by Display Name, Nickname or email address. Tick the contacts you want and press Export Selected to save only those.
How do I add recovered cached contacts back to Outlook?
Export them to PST. Select PST and tick Export into Default Contacts Folder or select the Existing PST option to add the contacts to a PST file you already use. Press Export, then press OK at the completion prompt.
Demo and price What the demo covers and what a licence costs
What does the free demo of the cache contact recovery tool do?
All options with an export cap. Demo edition loads NK2 and DAT files, previews all recovered contacts and exports 15 contact items per file in any output format.
How much does Outlook Cached Contacts Recovery cost?
$49 for the Windows full edition. Full edition removes the 15 item limit and comes with a 30 day money back guarantee. Mac edition for OLK files costs $29.
Is there a money back guarantee?
Yes. PCVITA covers the full edition with a 30 day money back guarantee. See the refund policy for the terms.
Compatibility and Mac Outlook versions, Windows versions, Outlook installation and the Mac edition
Which Outlook versions create NK2 and DAT files?
Outlook 2007 and below create NK2 files. Later versions create DAT files. PCVITA tool opens both file types, so one install covers old and new Outlook profiles.
Which Windows versions does the recovery tool support?
Windows 10 (32 and 64 bit), 8.1, 8, 7, Vista, 2000, 2003, 2008 and 2012. Your machine needs an Intel Core 2 Duo E4600 2.40 GHz processor, 2 GB RAM and 100 MB free disk space.
Do I need Outlook installed to recover cached contacts?
Yes. PCVITA cache contact recovery needs Microsoft Outlook installed and configured properly on the machine.
Is there a Mac edition for Outlook cached contacts?
Yes. Mac edition recovers recent addresses from OLK files of Outlook for Mac 2019, 2016 and 2011 and costs $29. Mac demo recovers 10 items per profile. Open the Contact Us page to get the Mac download. Open the OLK Converter to convert Outlook for Mac mail.
Question not answered here? Ask on Live Chat or write to us from the Contact Us page.
Outlook Cache Contact Recovery Reviews
Ratings from pcvita.com and customer words after an NK2 recovery.
NK2 files are hidden Outlook files that cannot be accessed directly. And for so long I was facing issues like complete contact information not being displayed in Outlook. All thanks to Outlook Cached Contacts Recovery software. I have not just found the corruption but also restored the NK2 file in PST format using this eminent utility.
It was complex for me to understand the NK2 file corruption. Because the concept of NK2 files corruption is not that much familiar for the normal Outlook users. So, thanks to this amazing software and its development team that restored my Outlook cached contacts simply.
GearDownload: 100% clean badge, no spyware, adware or viruses found in PCVITA software.
DownloadAtoZ: 5 star award badge for PCVITA software. See every badge on the PCVITA awards page.
Key Takeaways on Cached Contacts Recovery
The short version of this page.
- Files and versions: recovers contacts from NK2 files of older Outlook versions and from DAT files of later ones.
- Loading: Add File takes one file or a folder. Auto detect locates the cache file for you.
- Preview and sort: check names, nicknames and email addresses in the preview pane, then export all or selected contacts.
- Output: contact files in PST, PDF, HTML, MSG and DAT, plus vCard, CSV and Google CSV.
- Demo and price: the free demo exports 15 items per file, the full edition costs $49 with 30 days money back.
Test the Recovery Tool on Your NK2 or DAT File
Download the free demo, recover your cached contacts, preview them and export the first 15 items in a file before you buy the full edition.
Safe & Secure · 30 Days Money Back*