Alfresco 6.0 hangs intermittently on Windows VM – uploads/downloads stop, no clear error in logs

love4119 — Fri, 10 Jul 2026 15:05:32 GMT

We are using Alfresco Content Services 6.0 in our production environment, installed on a Windows VM. During the Alfresco installation, PostgreSQL was also installed locally/internal to the same VM.

We are facing a recurring issue where Alfresco becomes unresponsive/hangs intermittently. When this happens:

File upload and download operations stop working
Alfresco becomes inaccessible or non-responsive for users
There is no significant CPU or memory spike at the time of the issue
- CPU usage remains below 40%
- Memory usage also remains below 40%
We do not see any specific or obvious error in the Alfresco logs or Tomcat logs

To recover from this situation, we have to restart one of the following:

Alfresco Tomcat service
PostgreSQL service
or sometimes the entire VM

After restart, the system starts working normally again.

At this point, we are unable to identify the root cause of the hang.

We would like guidance from the community on:

What could cause Alfresco 6.0 to hang in this way without CPU/memory spikes?
Which logs or diagnostics should we check during the issue?
Are there any recommended monitoring steps, thread dumps, DB connection checks, or PostgreSQL settings we should review?

Any suggestions for troubleshooting or identifying the RCA would be very helpful.

Thanks in advance.

topic Alfresco 6.0 hangs intermittently on Windows VM – uploads/downloads stop, no clear error in logs in Alfresco Forum

Alfresco 6.0 hangs intermittently on Windows VM – uploads/downloads stop, no clear error in logs