Suddenly cannot backup using Windows XP built-in backup utility. Error: “Error returned while creating the volume shadow copy: 80042301”.

Solution:

Use suggestion from Adi Oltean as follows:

There are at least two possible causes for this problem:

1. The COM+ Event System service is disabled (open services.msc and, if this is the case, re-enable this service). This service should be enabled by default.
2. The Windows Setup encountered a problem. Just run “REG.EXE QUERY HKLMSystemSetup”. If any of the SystemSetupInProgress/UpgradeInProgress is different than zero, then you will get this message. To fix this issue in this case, please run the following commands:

REG ADD HKLMsystemsetup /v SystemSetupInProgress /t REG_DWORD /d 0/f
REG ADD HKLMsystemsetup /v UpgradeInProgress /t REG_DWORD /d 0 /f

Tricks:

Start -> Run -> Open: services.msc

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