Hi @lalajee ,
To narrow down the problem, we may need more information.
> It doesnt reboot but when you manually reboot the machine it marks as failed
1, Please describe the failure scenario specifically or upload a screenshot for us to discuss together.
2, Please check if our OS version has changed. For example:
3, For more details about the task sequence, please check Smsts.log in the client, if there are any errors.
Depending on the deployment scenario, SMSTS.log may reside in %TEMP%, %WINDIR%\System32\ccm\logs, or C:_SMSTaskSequence, or C:\SMSTSLog.
4, For more details about the installation process, please check the following logs in client, if there are any errors. By default, the folders that contain these log files are hidden on the upgrade target computer. To view the log files, configure Windows Explorer to view hidden items.
5, Furthermore, according to your needs, we can try to add a restart step in the task sequence and add notification and delay. The delay time depends on your needs. For example:
Looking forward to your reply!