Posts: 25
Threads: 3
Joined: Apr 2026
Reputation:
3
@lavande, We are in big trouble if MS does not know the origin of the problem. But assuming that they know or can determine the cause then the question is will they do anything about it and when.
I have successfully done a few backups on multiple PC's with MR8.1 and HBS. Some completed normally and others saved the backup file but did not complete their wrap-up.
Posts: 3,032
Threads: 17
Joined: Feb 2014
Reputation:
219
This issue only occurs on a small number of computers. As @lavande pointed out, does Microsoft know the root cause of the problem? Regardless, users should at least be informed about whether Microsoft is working on a fix.
Posts: 6
Threads: 0
Joined: May 2026
Reputation:
0
Hello,
I tried the temporary version, and it worked fine. I performed a full system backup, and it started right away and completed successfully, as it's used to.
This works around the issue for affected systems until an official fix (probably by MS) is shipped.
Thank you for the effort ^^
Posts: 105
Threads: 27
Joined: Nov 2023
Reputation:
0
Unfortunately it did not work for me.
It's important that everyone distinguishes between disk backup and files backup and system backup
HBS has continued to work fine for all my disk backups
It's the file backups that fail (and for me) still fail using this release.
BTW the cancel button triggers the cancel but it never completed...
I had to close via the task manager.
JayDee
Posts: 4
Threads: 0
Joined: May 2026
Reputation:
0
The new temp version failed for me.
Back up hangs with:
"127 (Waiting for the asynchronous operation to finish...)" as last entry in log file.
File backup of my Document Folder.
When people are testing this and reporting their results, it may help if they also check their Core Isolation Setting.
A while back Core Isolation was being turn off for better gaming performance.
Note that Microsoft Vulnerable Driver Blocklist is under Core Isolation Setting.
For mine, all are turn on:
Memory integrity: on
Kernel-mode Hardware .... : on
Local Security Authority protection: on
Microsoft Vulnerable Driver Blocklist: on (And greyed out)
Posts: 25
Threads: 3
Joined: Apr 2026
Reputation:
3
The 260506 temp version worked correctly for me doing:
1. System backup
2. Partition backup
3. File backup
However, for #3 I had run my VSS batch fix first so that "vssadmin list writers" would complete normally. Without doing this the backup would hang at 0% in the calculation phase. Pressing Cancel would not terminate the process. HBS had to be forced closed using Task Manager.
Core Isolation is on for all 4 items.
Posts: 25
Threads: 3
Joined: Apr 2026
Reputation:
3
The script was not necessary for the System Backup or Partition backup. It was only needed for the file backup. I have not done a file backup where VSS fails during the process. For multiple file backups it may be necessary to:
run script
reboot
backup
rinse and repeat.
With the temp version fixing the System/Partition backup maybe they can do the same for file backup.