Use GetCID Free to generate your 48-digit Confirmation ID (CID) from any 54 or 63-digit Installation ID, run fast bulk PIDKey Check (Windows & Office Key Check), verify Office Redeem Keys, and check Office 365 Accounts in seconds.
Everything technicians, system builders, and everyday users need to verify and activate Microsoft Windows, Office, and Server licenses online for free.
When Windows or Office shows "Activate by telephone" or error 0xC004C008, run slui 4 to view your 54-digit or 63-digit Installation ID. Paste it into our GetCID Generator to receive your 8-block Confirmation ID (A–H) in under 2 seconds.
Need a fast online key check? Our PIDKey Check automatically detects the matching Microsoft PKeyConfig certificate in parallel, displaying the exact Product Description, Sub-Type, Remaining MAK Count, and live Error Code.
Before binding an Office Retail or Home & Business key at setup.office.com, verify its live status in our Redeem Check. It safely checks Microsoft's OLSC service to confirm if the token is Valid, Already Used, or Scrapped.
Explore our full, in-depth tutorials on Windows 11/10 phone activation, Office Confirmation IDs, PIDKey diagnostics, and Office 365 redeem key verification.
slmgr.vbs /ipk <Product-Key> in Administrator Command Prompt.slui 4 (or run slmgr.vbs /dti on Windows 11 24H2) to get your 63-digit Installation ID.slmgr.vbs /atp.cscript ospp.vbs /dinstid.cscript ospp.vbs /actcid:<48-Digit-CID> and verify permanent license status.0xC004C008, 0xC004C003, 0xC004C020, 0xC004C060) and check remaining MAK counts.DISM /online /Set-Edition.KeyCanBeRedeemed, KeyAlreadyRedeemed, KeyScrapped, PKPN, and ACID.setup.office.com and download the official offline installer.Quick reference guide for all status codes returned by Microsoft's activation and licensing servers.
| Status / Code | Tool | Server Meaning & Recommended Action |
|---|---|---|
| Online / Valid | PIDKey / Redeem | The product key is genuine, active, and ready for direct online activation or redemption at setup.office.com. |
| 0xC004C008 / 0xC004C020 | PIDKey Check | The key is genuine and eligible for Phone Activation (0xC004C008 for Retail/OEM keys, 0xC004C020 for Volume MAK keys). Copy your Installation ID from slui 4 and paste it into the GetCID Free tab above to get your Confirmation ID for free! |
| 0xC004C003 / 0x67 / 0xC004C060 | PIDKey / GetCID | The product key has been permanently blocked by Microsoft. Neither online nor phone activation will work. You can buy a new, 100% working genuine key at an affordable price from ResellKeys.com. |
| Used / InvalidToken | Redeem Check | The Office redeem key has already been redeemed to a Microsoft account or was cancelled by the issuer. |
Answers to common questions about Microsoft telephone activation and product key checking.
Most GetCID and PIDKey portals charge per check or require paid API tokens. GetCID.cc is supported by sponsorships from verified software partners, allowing us to offer unlimited Confirmation ID generation, PIDKey Check, Office Redeem Check, and Office 365 Check 100% free.
No! Checking MAK remaining counts, reading PKeyConfig product descriptions, or checking Office Redeem Key status via OLSC is completely read-only and never consumes an activation or binds your key to any account.
Both error codes 0xC004C008 (Retail / OEM) and 0xC004C020 (Volume MAK) are good news! They mean your product key is genuine and not blocked—it simply requires telephone activation. Install the key on your PC, open the Activation Wizard (slui 4 or slmgr.vbs /dti), copy the 63-digit Installation ID, and paste it into our GetCID Free tab to generate your 48-digit Confirmation ID immediately.
When Microsoft's licensing server reports that a key is blocked (0xC004C003 / 0xC004C060 / 0x67) or has already been redeemed, that key can no longer be activated. You can buy a new, 100% working Windows or Office key at a lower, affordable price with instant delivery from ResellKeys.com.