Last Modified: Aug 19, 2026
Affected Product(s):
BIG-IP All
Known Affected Versions:
11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4
Fixed In:
12.1.0, 11.6.1
Opened: Sep 08, 2015 Severity: 2-Critical Related Article:
K61084637
After creating SSL profile, 'could not load key/certificate file' appears in /var/log/ltm with profile name. Unable to connect to virtual with SSL profile.
Unable to load certificate.
Certificate uses sha1WithRSA or dsaWithSHA1_2 signature algorithm.
None.
Can now load certificates with sha1WithRSA or dsaWithSHA1_2 signature algorithm.