Service Pack installation fails with error message -"Unknown Error code: 536870921".
You will encounter such an error when the Service Pack (SP) Installable file extraction fails. This could happen if the SP is unable to find a volume with enough disk space for file extraction.
You can resolve this issue by clearing some files from the OS installed drive and retrying the SP installation. To check your hard disk space, follow the instructions given below:
In case there is not enough free space to install the SP, you can employ one or more of the following methods to clean disk space:
To clean the temp directory, follow the instructions given below:
To clean your Temp directory, you first need to determine its location on your hard drive. Then, you'll delete the contents of the directory using a MS-DOS command or through Windows Explorer. To determine the location of the Temp directory:
For User Temp files:
For System Temp files:
To delete the contents of the Temp directory:
Choose one of the following methods to delete the contents of the Temp directory.
Note: Do not delete the Temp directory itself. Delete only the files and folders in the directory as follows:
Using a MS-DOS Command
For example: deltree /y C:\\Windows\\Temp\\*.*
temp_directory_location is the location of the Temp directory.
Through Windows Explorer
Note: You can make use of the Disk Clean Up utility of the the Endpoint Central Application to remove unwanted files from the disk.
Applies to: Patch Management, Service Pack Installation
Keywords: Patch Management, Patch Deployment Failure, SP Installation, Unknown Error Code: 536870291
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