# License Key - but still limited conversions

**URL:** <https://forums.negativelabpro.com/t/license-key-but-still-limited-conversions/220>\
**Category:** Troubleshooting and Bugs\
**Created:** [May 17, 2019, 5:26pm UTC](https://forums.negativelabpro.com/t/license-key-but-still-limited-conversions/220 "2019-05-17T17:26:25Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![nate](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.negativelabpro.com/nate/32/4_2.png) [@nate](https://forums.negativelabpro.com/u/nate)\
**Post date:** [May 18, 2019, 5:50pm UTC](https://forums.negativelabpro.com/t/license-key-but-still-limited-conversions/220/2 "2019-05-18T17:50:07Z")

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Hi! This is answered here:

> [@SOLVED: "Negative Lab Pro remains in Trial Mode even after entering my serial number"](https://forums.negativelabpro.com/t/solved-negative-lab-pro-remains-in-trial-mode-even-after-entering-my-serial-number/119):
>
> Problem: “I entered my Negative Lab Pro serial key into the Lightroom plugin-manager. It appeared to be successful, but then when I try to use Negative Lab Pro, it is still in trial mode, and I see my remaining uses counting down.” Solution: First, make sure you have the most recent version of Negative Lab Pro. Then, follow these steps to force Lightroom to keep your Negative Lab Pro registration. Exit Lightroom Hold down Shift-Option (on Windows it’s Shift-Alt) as you double-click on your…

The newest versions of Lightroom seem to be causing some issues with saving the serial. I’m seeing if there is a way to make this more stable, but in the meantime, you can follow the article above.

-Nate

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