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Microsoft offers fixes for Vista SP1 reboot woes

Workaround for PCs that endlessly reboot

Microsoft has detailed several workarounds for those who downloaded Windows Vista Service Pack 1 (SP1) only to find the update caused their system to endlessly reboot.

The problems started last week, when an update - actually a pair of prerequisite files that modify Vista's install components to prep the operating system for SP1 - caused some systems to reboot over and over, while others simply balked at booting. On Tuesday, Microsoft reacted to a flood of reports on its support forums by pulling the files from Windows Update until it could determine what went awry.

See also:

Windows Vista SP1 review

FAQ: Vista Service Pack 1 beta

Final Vista SP1 code released to techies

Although some users managed to stop the rebooting on their own or with help from others posting messages to a Microsoft support newsgroup, Microsoft was officially mum on a fix or workaround until yesterday.

The KB949358 support document confirmed what users had been reporting for more than a week.

"When you try to install an update from Windows Update on a computer that is running Windows Vista, you may receive the following message: 'configuring updates stage 3 of 3. 0% complete'," it read. "After you receive this message, the computer reverts to the screen that displays the same message. Additionally, the update is not installed successfully, and the computer restarts."

The document also gave users three ways to stop the rebooting and take back control of their PCs. It suggested that they try them in this order:

- Start Windows Vista by using the Windows installation media, and then select the ‘Repair your computer’ option.
- Start the computer in Safe Mode, and then use the Repair or System Restore feature;
- Rename the 'Pending.xml' file, and then edit the registry.

Most, though not all, users who had tried these earlier - other users suggested the trio on the newsgroup days before Microsoft put its stamp on the fixes - had reported they'd reclaimed use of their PCs.

Some wags on the support newsgroup, meanwhile, have dubbed the snafu 'Microsoft's St. Valentine's Day Vista Massacre', a nod to the day when reports first filled the forum. Many of them also complained of poor-quality advice from Microsoft's phone support representatives, but said that they'd managed to recover their machines using one of the three fixes the company outlined on Friday.

"I received this update on Feb. 14 and it killed Vista," wrote a user identified as D Clarke. "I spent most of two days on the phone with a Microsoft guy from India named 'Steve'."

Rather than wait for the Microsoft rep to call him back, however, Clarke tried the "Repair your computer" option, the first one outlined in the support document posted Friday.

While a patched update isn't yet available, Microsoft remained confident that the delay would not ruin its release plans for SP1. "This will not affect the SP1 release schedule," a company spokeswoman said. "We are on schedule to release Windows Vista SP1 to Windows Update and the Download Center in mid-March and to users using Automatic Update in mid-April."


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