# GLIBC library issues on Ubuntu 16 with dfx version 0.7.0-beta.4, 5, and 6 **URL:** \ **Category:** Developers\ **Created:** [May 5, 2021, 6:41pm UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708 "2021-05-05T18:41:08Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![lastmjs](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/lastmjs/32/3406_2.png) [@lastmjs](https://forum.dfinity.org/u/lastmjs)\ **Post date:** [May 5, 2021, 6:41pm UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/1 "2021-05-05T18:41:08Z")
I am using Ubuntu 16.04.7 LTS, and I can’t run any dfx commands after installing dfx 0.7.0-beta.4, 0.7.0-beta.5, or 0.7.0-beta.6. 0.7.0-beta.3 works just fine. I get the following errors: ```bash dfx: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by dfx) dfx: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.25' not found (required by dfx) ``` ---
**Author:** ![ililic](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/ililic/32/931_2.png) [@ililic](https://forum.dfinity.org/u/ililic)\ **Post date:** [May 6, 2021, 1:53am UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/2 "2021-05-06T01:53:36Z")
Hey @lastmjs, thanks for the note. We’ll be unable to release a version of DFX that works without glibc 2.29 in the near term because it’s actually quite a heavy lift. Have you tried installing glibc \>= 2.29? This should be a workaround for you. The current LTS of Ubuntu (20.03) has the right version of glibc. ---
**Author:** ![lastmjs](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/lastmjs/32/3406_2.png) [@lastmjs](https://forum.dfinity.org/u/lastmjs)\ **Post date:** [May 6, 2021, 2:40am UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/3 "2021-05-06T02:40:09Z")
That sounds good, I haven’t tried yet. I believe Ubuntu 16 just went out of LTS, so I shouldn’t expect it to be supported. Thanks for the update ---
**Author:** ![lastmjs](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/lastmjs/32/3406_2.png) [@lastmjs](https://forum.dfinity.org/u/lastmjs)\ **Post date:** [May 19, 2021, 8:59pm UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/4 "2021-05-19T20:59:56Z")
I just updated my OS and dfx seems to be working, thanks again ---
**Author:** ![flyq](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/flyq/32/3637_2.png) [@flyq](https://forum.dfinity.org/u/flyq)\ **Post date:** [August 25, 2021, 7:07am UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/5 "2021-08-25T07:07:14Z")
The same problems in Ubuntu 18.04: ```auto dfx -h dfx: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by dfx) ``` ---
**Author:** ![claudio](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/claudio/32/322_2.png) [@claudio](https://forum.dfinity.org/u/claudio)\ **Post date:** [August 25, 2021, 9:46am UTC](https://forum.dfinity.org/t/glibc-library-issues-on-ubuntu-16-with-dfx-version-0-7-0-beta-4-5-and-6/2708/6 "2021-08-25T09:46:48Z")
I’m not sure this has been fixed yet but I also had the same issue with 18.04 and fixed it by upgrading to 20.03. Not ideal, but that’s one solution. Have your tried a later version of dfx? It’s at 0.8.1 now, I believe.