Hello, we have encountered a situation where some Kaspersky Endpoint Security clients on certain users' PCs running version 11.0.1.xxxxx( 11.0.1.15919 and 11.0.1.90) are unable to perform software updates or database updates to the latest version, whereas KES version 11.0.0.6699 (an older version) with certain Kaspersky Network Agent versions like 10.5.1871 and 10.0.1131, can update without a hitch.

We have comb through the update logs and audit logs from KES. For user PCs that failed to run the update task, all update entries end with "No updates available," while for the versions that ran successfully the update entries have "Completed" status.
The Kaspersky Security Center (KSC) being used is 11.0.0.1131( is this too outdated ?) . KSC is installed on Windows Server 2012 R2. The license details installed on KSC are "Kaspersky Next EDR Foundations South-East Asia Edition. 100-149 Users, 1-Year Renewal Plus License"

We have already tried clearing the KSC update repository and redownload the repo but to no avail.

Thanks in advance  

🧩 Understanding What's Happening — Simply Put

Think of KSC as a librarian and KES clients as students who come to borrow books (updates).

• The older students (KES 11.0.0.6699) ask for books the librarian already has → ✅ "Here you go."
• The newer students (KES 11.0.1.x) ask for newer books → ❌ "Sorry, I don't have anything for you" → This shows up as "No updates available."

This is not a network issue — it's a compatibility/repository mismatch between the KSC version and what KES 11.0.1.x expects.

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🔴 Issue , KSC 11.0.0.1131 Is Too Outdated (Critical)

This is the prime suspect.

Component	Your Version	Problem
KSC	11.0.0.1131	Very early build of KSC 11
KES (failing)	11.0.1.15919 / 11.0.1.90	Released significantly later than KSC build
KES (working)	11.0.0.6699	Close to the KSC build era

✅ Recommended Fix Path (Step by Step)

Step 1 — Upgrade KSC to Version 15.1.0.22239 (Recommended Fix)

Since you're on Server 2012 R2, target KSC to Version 15.1.0.22239 (the highest safely supported version on your OS):

1. Backup KSC database before any upgrade
2. Download KSC to Version 15.1.0.22239 from https://products.s.kaspersky-labs.com/administrationkit/ksc10/15.1.0.22239/english-INT-35769985-en/0ebf2e9c4c7346e8a2c48e368c6cbe0a/ksc_15_15.1.0.22239_Console_en.exe
3. Run in-place upgrade — KSC Version 15.1.0.22239 supports upgrading directly from KSC 11
4. After upgrade, force a repository sync and rerun the update task on Latest Keswin Version

Step 2 — Upgrade Keswin to 12.12 Version (Recommended Fix)

Since you're on Windows 7 minimum, Upgrade Keswin to 12.12 Version (the highest safely supported version on your OS):

1. Download Keswin to 12.12 Version from https://aes.s.kaspersky-labs.com/endpoints/keswin11/12.12.0.522/english-INT-21.24.8.522.0.467.0/f0839a9493a884e5f355fad813549c6d/keswin_12.12.0.522_en_aes256.exe
2. Run in-place upgrade — Keswin to 12.12 Version supports upgrading directly from Keswin 11
3. After upgrade, force a repository sync and rerun the update task on Latest Keswin Version

Regards

Ahnaf Tahmeed