Solution: in Windows 8, the full name document of the computer "locked by another user" cannot be opened in microsoft office. The background is the core version of the built-in win8 laptop. The User Group Policy is not modified. Two days ago, I changed the full name of the computer, which caused the original documents such as doc docx xmlx to be unable to be opened in word excel. Tip: The current document has been locked by another user, and three options are provided: Read-only mode, open copy, and ,... If no one is selected, an error will be reported at the end -- the document is damaged ---------------------- I thought it was damaged. Copy it to another computer and open --------------------- normally. solution: it is estimated that after changing the full name of the computer, the system environment variable has changed. Modify the settings as follows: Computer> right-click Properties> advanced system Settings> environment variables. In the preceding user variables, the original statuses of TEMP and TMP are % USERPROFILE % AppDataLocalTemp, as shown in. Change it to the absolute path C: \ Users \ adminAppDataLocalTemp (default) in the directory where the user folder is located. After modification, the effect is as follows: restart, you can open it. ------------------------------ If not, 1. Check whether you have administrator permissions. 2. Check the system permissions assigned by the office. 3. Try to modify the computer name (case sensitive ), after that, you still need to modify the environment variable 4. reinstall office ----------------------------- about 1. Press the "Win + R" shortcut key to enter the "run" interface-> enter netplwiz, go to the user account settings page, select the account for which you want to add permissions, and click Properties.-> click members and click "Administrator ". ----------------------------- About 2, find the office software shortcut (default path: C: \ ProgramData \ Microsoft \ Windows \ Start Menu \ Programs \ Microsoft Office 2013) on any shortcut icon-> right-click Properties-> Security-> edit, and grant all permissions to the users user group. ------------------------------- about 3, the original computer name, if you do not remember, you can choose "desktop"> "right-click Properties"> "manage"> "Event Viewer"> "windows System Event Log. Expand the windows Log (such as the "System" option) (Time required) and query the computer name (full name) in "general information" based on the event time)