QuickBooks Error 3371 Status Code 11118 appears as: “Could not initialize license properties. QuickBooks is unable to verify the license for this computer.” It occurs at startup — before QuickBooks finishes loading — and stops the program from opening entirely. According to Intuit’s official Error 3371 documentation, the single cause is a corrupted or hardware-mismatched EntitlementDataStore.ecml file, and the fix is always to delete that file and re-register your license. No financial data is at risk.
What causes QuickBooks Error 3371
Corrupted EntitlementDataStore.ecml — The ecml file links your QuickBooks license to your computer’s hardware profile. If it becomes corrupted — from a crash, a failed update, or disk errors — QuickBooks cannot read the license data and refuses to start.
Hardware change after initial registration — QuickBooks records your hardware IDs when you first activate. A Windows reinstall, a motherboard replacement, or a significant hardware change updates those IDs. The old ecml file then fails the hardware check, triggering Error 3371 on every subsequent launch.
Moving QuickBooks to a new computer — Copying QuickBooks program files to a new machine copies the old ecml file with old hardware IDs. The new machine’s IDs don’t match, causing immediate Error 3371.
Windows or QuickBooks update — Major Windows updates can change hardware identifiers stored in the registry, invalidating the existing ecml record. QuickBooks updates occasionally corrupt the entitlement system files directly.
How to fix QuickBooks Error 3371
Step 1 alone resolves the vast majority of Error 3371 cases and takes under five minutes.
How to verify the fix
After completing Steps 1 and 2, QuickBooks should open to the No Company Open screen without any license error. To confirm: go to Help > About QuickBooks — your registered license number should appear correctly. If QuickBooks opens normally, the fix worked.
Frequently Asked Questions
What is EntitlementDataStore.ecml and is it safe to delete?
EntitlementDataStore.ecml is the file QuickBooks uses to store your license information and link it to your computer's hardware profile. It is completely safe to delete — QuickBooks regenerates it automatically when you re-enter your license. The file contains no financial data, no company file information, and no personal settings. Deleting it is Intuit's own first recommended step for fixing Error 3371.
Where can I find my QuickBooks license number?
Your QuickBooks license number is a 16-digit number (formatted as XXXX-XXXX-XXXX-XXXX) and your product number is a 6-digit code. Find them in your Intuit account at camps.intuit.com under Manage My Licenses, in your original purchase confirmation email, or on the product sticker on the original disc packaging. If you cannot find either, contact Intuit support with the email address you used to purchase — they can look up your license.
Why did QuickBooks Error 3371 appear after a Windows reinstall?
Windows reinstalls change the hardware identifiers QuickBooks uses to validate its license — specifically the hard drive serial number and other system IDs stored in the Windows registry. When QuickBooks reads the old EntitlementDataStore.ecml after a reinstall, the hardware IDs no longer match the current system, causing Error 3371. Deleting the file and re-registering with your license key rebuilds the entitlement record for the new hardware profile.
Can I move QuickBooks to a new computer without getting Error 3371?
Yes. To move QuickBooks to a new computer: install QuickBooks fresh on the new machine using your original license and product numbers, then copy your company file (.qbw) to the new computer. QuickBooks will activate cleanly on new hardware. You do not need to deactivate it on the old computer first — Intuit allows a limited number of simultaneous activations. If you exceed the activation limit, contact Intuit support to reset it.
Error 3371 appeared after a QuickBooks update. What happened?
QuickBooks updates occasionally corrupt the EntitlementDataStore.ecml file — particularly major version updates or patches that modify the entitlement system. The fix is the same: delete EntitlementDataStore.ecml from C:\ProgramData\Intuit\Entitlement Client\v8\ and re-enter your license when QuickBooks asks. If your payroll or full-service subscription has lapsed, you will also need to renew before QuickBooks will reactivate.
