I noticed the following update is not a fixlet option in BigFix:
Security Update for Windows Server 2008 R2 x64 Edition (KB3033929)
This KB is showing up in Windows update. Need to install on one of the server.
This was the SHA2 signing update, released in March, 2015. Per the MS Catalog at Microsoft Update Catalog , the update has been replaced by a number of other updates, including
2019-06 Security Only Quality Update for Windows Server 2008 R2 for x64-based Systems (KB4503269)
2018-08 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4343900)
2019-08 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4512506)
2019-11 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4525235)
November, 2016 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB3197868)
2019-01 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4480970)
2018-09 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4457144)
2019-12 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4530734)
2020-01 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4534310)
2020-02 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4537820)
2020-03 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4540688)
2020-04 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4550964)
2020-05 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4556836)
2020-06 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4561643)
2020-07 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4565524)
2020-08 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4571729)
2020-09 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4577051)
2020-08 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4571729)
2020-10 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4580345)
2020-11 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4586827)
2020-12 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4592471)
2021-01 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4598279)
2021-02 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB4601347)
2021-03 Security Monthly Quality Rollup for Windows Server 2008 R2 for x64-based Systems (KB5000841)
I see KB4503269 and KB4534310 in “Patches for Windows”, applying either of those should provide the update (the first may be a prerequisite for the second, since it introduced the SHA2 signing update).