how to fix error 491

1. Open the WIN8 installation disk, extract the Sources\sxs folder to D:\sources\sxs (or another disk, for example);2. Open the C:\Windows\System32 folder, locate Cmd.exe, right-click, select "Run as Administrator "; 3. Execute the following command at the command line: dism.exe/online/enable-feature/featurename:netfx3/source:d:\ Sources\sxs (the first step is extracted) quick words are done in two minutes, some maybe 68. % of the time has not been forward, patient waiting, about half an ho

When installing the Xmind , an improper installation can result in a failure to install the system or the cause of the operation.This article mainly on the installation of XMind when prompted JVM terminated. Exit Code=-1 The wrong situation to explain. This problem may be due to the fact that no eclipse is installedand the workaround is simple. Locate the XMind installation package, and open the XMind configuration settings file. When opened in Notepad, locate:-vmargs-xms128m-xmx512m-xx:maxperms

1, first use PYQT Designer to design the UI interface, save it as "***.ui" file,Then go to the file directory where PYQT is located and execute the cmd command, that is, the corresponding **.py file can be generated in the current directory.2. After the generated Python code, we need to modify its inherited object class to Qtgui.qmainwindow. Add a __init__ method, in __init__, first call the parent class Qmainwindow construction method, and then call the auto-generated two methods. (Note that th

Open the project's Androidmanifest.xml file and modify the Android:targetsdkversion version value to a lower version, such as android:targetsdkversion= "21" to a value of "20" or the following. When you are finished modifying. (Project-> the Context Menu, Android Tools, Fix project Properties once, then empty all the items and compile automatically), so the problem is solved.Fix an issue that prompts ' Running Android Lint '

ECS Linux, if the accidental operation of the/directory permissions in bulk settings, such as Chmod-r 777/, most of the system services and commands will not be available, this time can be used by the system's own GETFACL command to copy and restore system permissions, fixed the following methods:1, through a normal Linux (the best kernel version and the same failure server) through Getfacl-r/>systemp.bak to the normal system/directory of all the file permissions are backed up in Systemp.bak,2,

First install MinGW, in the MinGW installation directory to find the Bin folder, find mingw32-make.exe, copy a renamed to Make.exe; Add the MinGW path to the environment variable path, for example, if I install MinGW into D:\MinGW\ , add D:\MinGW\bin to path ; Open a command-line window and enter the directory where you want to install the code in the command-line window; Enter the following command to install it. setup.py install build --compiler=mingw32 If you have installed VS2

blue Screen Code 0x000000ed sharing the reason and solution to the next, take a look at it. Reason Analysis: If the prompt is: 0x000000ed error. This indicates that the computer's hard drive has caused the failure. In general, it may be a sudden power outage, or the host has a collision, hard disk data cable loose, etc., will cause hard disk failure. Workaround: It is best to repair the hard disk to prevent the next occurrence of such probl

to work, you'll need to such that's cp src\com\cheng\scrap\config.properties build\classes\ com\cheng\scrap\ config.properties directly under classes \ com\cheng\scrap\ , an D at the same level as scrap . Alternatively, can put com\cheng\scrap\ config.properties (along with the long subdirectories) into a config.jar ,and include config.jar in the classpath. You are wondering why are it made so confusing? The benefits is Two-fold, as I see it: Location transparency. At runtime, Confi

Tags: style blog http color ar sp Data div Arthttp://blog.csdn.net/c517984604/article/details/7052186 [ERR] 1242-subquery returns more than 1 row--Indicates that the subquery returned multiple rows of dataFor example:SELECT * FROM table1 where table1.colums= (select columns from table2)Workaround1,select * FROM table1 where column=any (select columns from table2)2,select * FROM table1 where column in (select columns from table2);3,select * FROM table1 a where exists(Select columns from TABLEB2 b

' Performance_schema '. ' Threads ' has the wrong structure140213 16:55:47 [ERROR] Native table ' Performance_schema '. ' Events_waits_summary_by_thread_by_event_name ' has the wrong structure140213 16:55:47 [ERROR] Native table ' Performance_schema '. ' Events_waits_summary_by_instance ' has the wrong structure140213 16:55:47 [ERROR] Native table ' Performance_

Tags: mysql 5.6 run crash"Fix" MYSQL 5.6 Run Crash errorRecently made a cloud host, configured to be 20G disk space, 1G running memory of the Linux server. In the above installed lamp (rhel7.2+apache2.4+mysql5.6+php5.6), and then set up the WordPress site, but the site runs not long, there is no connection to the database. To the server using: Ps-aux |grep MySQL, found that the MySQL service did not run, very puzzled how to run well, they stopped. The

We usually open a computer when there are often some problems, such as some wrong code, or some failure to boot normally, recently in the Win7 flagship download installed on the 0xc0000098 error code, this can be solved in some ways, But maybe a lot of friends do not know how to do, into safe mode and not to go to this time feel more difficult, in fact, we need to fix the BCD file can solve this problem, we

', @UserNamePattern = ' Fred '; Where Auto_Fix is automatically mapped to the same login name, if the login does not exist, it will be created and the value you define in @password as the new password. More: In many cases, the onwer of the database may also become orphaned, which can be checked with the following statement: SELECT SUSER_SNAME (OWNER_SID), name from sys.databases; If the first behavior in the returned result is null, it means that the onwer of the database is also orphaned and

Tags: vulnerability CVE tar help ARC client target IDT jpgRelease Notes:Server version: Windows Server R2 SP1 (virtual machine) client version: Windows 10 Home EditionProblem Description:When using Windows Remote Desktop Connection, the error described below, 1, is not resolved after reconfiguring the credentials. Figure 1 The first time to search the Internet to find the answer, most of the posts are around two solutions, both solutions did not solve

Today, a netizen left a message saying that the feed of the blog has been hung, the symptoms are as follows: The Chrome Direct Open subscription page appears as follows: This page contains the following errors: error on line 1 at column 1:document are empty Below is a rendering of th E page up to the. FeedDemon Hint: This feed contains errors. After the addition also has no effect, can be used normally. The fruit reader can also be

Wamp after the installation, MySQL password is empty, then how to modify it? Actually very simple, through a few instructions on the line, below I step by step to operate.First, open the MySQL console via Wamp.Prompt for password, because it is now empty, so press ENTER directly.Then enter "Usemysql", meaning that using MySQL database, prompt "database changed" on the line.Then enter the SQL statement for the password you want to modify "update user set Password=password (' Hooray ') where user=

It is a common error this users generally encounter when they try to execute a brew command as sudo and shown below are an Example of the error looks like: Debjit-sahas-mac-mini:mcrypt debjit$ sudo brew link mcryptPassword:Sorry, try again.Password:Error:cowardly refusing to ' sudo brew link 'You can use a brew with sudo and only if the brew executable are owned by root.However, this is both not re

The following error occurred while using maven:Failure to transfer org.apache.maven.plugins:maven-jar-plugin:pom:2.4 from Https://repo.maven.apache.org/maven2 is Cached in the local repository, resolution won't is reattempted until the update interval of central have elapsed or upd Ates is forced. Analyze the problem: After reviewing the data, it is assumed that it is a package problem.1. Find Maven's package location: Window->preferences->maven

Environment: mysql+java+hibernateProblem Description: after starting the transaction, the Java code First makes a query, then inserts, and then it reports: ERROR jdbcexceptionreporter:78-could not retrieve transation read-only status s Erver Problem Solving process: View MySQL's things isolation levelSHOW VARIABLES like '%iso% ';Results returned: repeatable-readChange this to: read-committed: SET GLOBAL tx_isolation= ' read-committed '; (Remember Jav

Today, when doing the project, there are two entities: style, brand relationship is many-to-many relationships, the realization of the function is: through the selection of styles, showing the style of all brands. The HQL statement is as follows:From Brand as b where b.styles.styleid=?This exception error occurred at runtime: Org.hibernate.QueryException:illegal attempt to dereference collection. through data found in the above hql statement, Br