Intune Sync Stoped

Hi, there are many ways to identify the issues, and I will outline them below:

Repports in intune:

Navigate to repport -> device compliance:

Device compliance: This displays a list of all devices and their compliance state. This will be
a useful report that most executives will be interested in. You can export it, but you cannot
click through to find out why devices are not compliant. It does have search functions as
well as some good filtering.

Device compliance trends: This is a simple graph that displays device compliance over the
last 60 days. It gives you the option to filter, but not to export or click through.

Noncompliant devices and settings: This report gives more depth to your Device compliance
report from earlier, and in most cases is the most useful report. It displays the device name
and then which particular setting(s) in the compliance policy (or policies) is causing the
non-compliance. If you have a custom policy, this can look at each individual setting within
it. It also reports whether the setting is simply non-compliant or if there is an error. It features
filtering, search functionality, and the ability to sort on headings.

Devices without compliance policy: This is a reasonably straightforward report that simply
lists any devices that do not have any compliance policies assigned. This should ideally be
empty, so it is always worth monitoring, more so if you have configured devices not listed
as compliant (it will tell you what these are set to and how to change them). You can filter
on OS and ownership, as well as sort and search on the device name. For a simple report,
this should be more than sufficient.

Setting compliance: This report lists all compliance settings across all policies and platforms
and the compliance/non-compliance figures for each setting. As well as filtering and searching,
all columns can be selected for sorting, and you can click through to find out which devices
are compliant or non-compliant for each setting. This is a useful report for spotting trends
across the estate, especially if you find a lot of non-compliant devices and want to look for
any similarities.
Policy compliance: Similar to the previous report, but rather than looking at individual
settings, this looks at the policy level and shows device compliance and non-compliance per
policy. Again, if you suddenly find numerous devices being blocked for non-compliance,
you can use this to see which policy is triggering it. It is especially useful for estates with
larger numbers of policies to help drill down which report a particular setting is in. As with
the others, you can search, filter, and sort by column.

Otherwise, you can check the event logs in your environment (Server)

Intune log (event) path is the Applications and Services Logs – Microsoft – Windows – Devicemanagement-Enterprise-Diagnostics-Provider – Admin.

Check if you can se Event ID 208 – Intune Server Sync Initiated, Event ID 813 for Intune Policy Integer, Event ID – 2900 – Warning Not Compliant, Event ID 809 – Unknown Win32 Error.

Check repports on the machine:

Download the MDM Diagnostic Information log from Windows devices

1- On your managed device, go to Settings > Accounts > Access work or school.

2- Select your work or school account, then select Info.

3- At the bottom of the Settings page, select Create report.

4- A window opens that shows the path to the log files. Select Export.

Accept the answer if you think it resolves the issues, and let me know if you need more help.