# Accidentally set CND password to null

**URL:** <https://forum.sierrawireless.com/t/accidentally-set-cnd-password-to-null/17853>\
**Category:** MC/EM Series\
**Created:** [October 8, 2019, 4:11am UTC](https://forum.sierrawireless.com/t/accidentally-set-cnd-password-to-null/17853 "2019-10-08T04:11:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![joojin.abaoag](https://avatars.discourse-cdn.com/v4/letter/j/ecb155/32.png) [@joojin.abaoag](https://forum.sierrawireless.com/u/joojin.abaoag)\
**Post date:** [October 8, 2019, 4:11am UTC](https://forum.sierrawireless.com/t/accidentally-set-cnd-password-to-null/17853/1 "2019-10-08T04:11:38Z")

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I tried setting the CND password to my EM7511 to a blank string thinking it would then just default to protected commands being available all the time but now at!entercnd doesn’t seem to accept anything. Is there a way i can reset the CND password? I’ve seen here on the forums some using AT!OPENLOCK to reset it; could i get the correct response code if i gave the challenge string?

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**Author:** ![Thor](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/thor/32/3889_2.png) [@Thor](https://forum.sierrawireless.com/u/Thor)\
**Post date:** [October 8, 2019, 11:00pm UTC](https://forum.sierrawireless.com/t/accidentally-set-cnd-password-to-null/17853/2 "2019-10-08T23:00:53Z")

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I suggest, you contact your established support channel for further support on this topic as it may require further looking into outside the context of this forum.

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**Author:** ![Thor](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/thor/32/3889_2.png) [@Thor](https://forum.sierrawireless.com/u/Thor)\
**Post date:** [October 10, 2019, 4:58pm UTC](https://forum.sierrawireless.com/t/accidentally-set-cnd-password-to-null/17853/3 "2019-10-10T16:58:31Z")

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Closed on October 10, 2019, 4:58pm UTC