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While configuring the updates, the progress rose to 9% then got stuck for 1 hour then moved to 12% and stuck for another half hour then finally rose to 14% and after 10 minutes the system restarted. In this case the SP1 update took 4 hours to configure which was due to Windows update agent failure, because it was not running to handle updates.It will take 1 hour to install on PC and another half hour to configure updates before and after system restart. However the update procedure should not take more than 1 hour 30 minutes to install completely. Reverting changes” and getting an Error 0x800f0826 windows 7.
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