This post onMiniTool Websitemainly discusses the cause of error code 0x81000033 when you create a system backup image.
Whats more, it offers several nice solutions for you on how to solve this issue.
Once receiving this error code, you cannot create a system backup image successfully.

After knowing when 0x81000033 appears, this article will continue to introduce the cause of it.
Backup Error Code 0x81000033 may be resulting from the conditions listed as follows.
Windows 10 image backup not enough space in the System Reserved Partition
2.

Installed too many unnecessary language packs on your PC
3.
Disabled system protection
- rig drivers out of date
How to Fix Windows Backup Error Code 0x81000033?
Try the following solutions that might help you a lot after triggering this error code.

Then start your PC, create a system back up again.
If the backup error code 0x81000033 still arises, you may try the following solution.
TypeWin + Eto chooseFile Explorerand check all the existed driver letters.

Launch theCommand Promptas an administrator.
Copy bcdboot.exe /s C:\Windows /s G: in the pop-up window and clickEnter.
(In this code, C is the root drive and G represents the newly created system volume.)

Execute the following commands one after another and remember to hitEnterafter each command.
DISKPART
DISKPART> select volume G
DISKPART> active
Step 4. kickstart your PC.
As a result, youd better remove all the unwanted language packs in theSettingof your PC.

Click theStartmenu to chooseSetting.
In theLanguagewindow, choose the language pack that you want to remove by left-clicking it and then clickRemove.
This solution is pretty easy if you never turn on the system protection.

Just go toSettingof your PC, and clickSystem.
In theSystem>Aboutwindow, selectSystem protection.
And then choose the system drive followed byConfigureinSystem Properties.

In the pop-up window, checkTurn on system protection.
you’re able to follow the next steps to update drivers.
Take the graphics card driver update as an example.

TypeDevice Managerin the search bar and next choose the most matched one.
ClickDisplay adapterin theDevice Managerwindow, right-click your graphics driver and chooseUpdate driver.
In the pop-up window, click Search automatically for drivers.
After that, Windows will look for the latest driver software for your PC on the Internet.
If there is a newer one, Windows unit Manager will download and plant the newer one for you.
Here we will offer a detailed guidance on how to do that.
Launch MiniTool ShadowMaker in Windows by clicking the left key twice, then clickKeep Trailto start a backup.
In the main function interface, clickBackup.
(The delayed backup task will remain in theManageinterface if you choose the latter one.)
Sincerely hope that the resolution mentioned in this article will solve your problem.