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  1. RHEL
  2. RHEL-87624

Firefox unable to authenticate to outlook.office.com in FIPS mode in the USA

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    • rhel-display-applications
    • ssg_display
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    • Unspecified
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    • x86_64
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      What were you trying to do that didn't work?

      • Authenticate to outlook.office.com while in FIPS mode

      What is the impact of this issue to you?

      • Unable to access outlook online

        Please provide the package NVR for which the bug is seen:

      • firefox-115.9.1-1.el8_9 or firefox-128.8.0-1.el8_10) and (nss-util-3.101.0-11.el8_8 or nss-util-3.90.0-6.el8_9

      How reproducible is this bug?:

      • This can only be reproduced in the United States thus far

      Steps to reproduce

      1. Install OS with FIPS mode enabled
      2. Use versions of Firefox noted above
      3. attempt to authenticate to outlook via Firefox

      Expected results

      • Works normally

      Actual results

      • Fails with error

      Additional notes

      • Only fails in the US
      • Attempts to reproduce this by LATAM support engineers fails and it works normally
      • Certificate and connection all appear to be FIPS 140-3 compliant
      • Can be worked around by using Mozilla's build of firefox or if you use Mozilla's version of libnssutil3.so and add it to /usr/lib64/firefox, but this workaround is NOT necessary outside of the US for some reason.

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        2. good-trace
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        3. image.png
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        4. sosreport-04105153-2025-04-22-eyvxzny.tar.xz
          16.68 MB
        5. sosreport-rhel810-1-2025-04-16-iqrjptb.tar.xz
          16.64 MB

              jhorak@redhat.com Jan Horak
              rhn-support-jwright Joe Wright
              Jan Horak Jan Horak
              Michal Odehnal Michal Odehnal
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                Created:
                Updated:
                Resolved: