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Why does my uptime not match my boot time?

Technote (troubleshooting)


Uptime of operating system does not match boot time

Resolving the problem

When I run the following relevances I get very different results:

Q: uptime of operating system
A: 52 days, 02:55:36

Q: boot time of operating system
A: Mon, 20 Oct 2008 08:07:44 -0700

Due to a bug in the operating system, "boot time of operating system" will roll over after 49.7 days. The uptime of operating system will allow you to determine how long the system has been running without this issue. Boot time is restricted by the GetTickCount Function (see the following reference:

Historical Number


Document information

More support for: IBM BigFix family

Software version: All Versions

Operating system(s): Platform Independent

Reference #: 1506090

Modified date: 18 September 2012

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