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+# FAQ
+
+## Content Overview
+* [SeLockMemoryPrivilege failed](#selockmemoryprivilege-failed)
+* [VirtualAlloc failed](#virtualalloc-failed)
+* [Error msvcp140.dll and vcruntime140.dll not available](#error-msvcp140dll-and-vcruntime140dll-not-available)
+* [Error: MEMORY ALLOC FAILED: mmap failed](#error-memory-alloc-failed-mmap-failed)
+* [Illegal instruction (core dumped)](#illegal-instruction)
+* [Virus Protection Alert](#virus-protection-alert)
+
+## SeLockMemoryPrivilege failed
+
+Please see [config.txt](config.txt) under section **LARGE PAGE SUPPORT**
+
+For Windows 7 pro, or Windows 8 and above see [this article](https://msdn.microsoft.com/en-gb/library/ms190730.aspx)  (make sure to reboot afterwards!).
+
+For Windows 7 Home :
+
+1) Download and install [Windows Server 2003 Resource Kit Tools](https://www.microsoft.com/en-us/download/details.aspx?id=17657).  Ignore incompatiablity warning during installation.
+
+2) In cmd or power shell: `ntrights -u %USERNAME% +r SeLockMemoryPrivilege`  (where %USERNAME% is the user that will be running the program.  This command needs to be run as admin)
+
+3) Reboot.
+
+Reference: http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?pid=259791#pid259791
+
+*Warning: do not download ntrights.exe from any other site other then the offical Microsoft download page.*
+
+## VirtualAlloc failed
+
+If you set up the user rights properly (see above), and your system has 4-8GB of RAM (50%+ use), there is a significant chance that there simply won't be a large enough chunk of contiguous memory because Windows is fairly bad at mitigating memory fragmentation.
+
+If that happens, disable all auto-staring applications and run the miner after a reboot.
+
+## Error msvcp140.dll and vcruntime140.dll not available
+
+Download and install this [runtime package](https://go.microsoft.com/fwlink/?LinkId=746572) from Microsoft.  *Warning: Do NOT use "missing dll" sites - dll's are exe files with another name, and it is a fairly safe bet that any dll on a shady site like that will be trojaned.  Please download offical runtimes from Microsoft above.*
+
+
+## Error: MEMORY ALLOC FAILED: mmap failed
+
+On Linux you will need to configure large page support `sudo sysctl -w vm.nr_hugepages=128` and increase your
+ulimit -l. To do this you need to add following lines to /etc/security/limits.conf:
+
+    * soft memlock 262144
+    * hard memlock 262144
+
+Save file.  You WILL need to log out and log back in for these settings to take affect on your user (no need to reboot, just relogin in your session).
+
+You can also do it Windows-style and simply run-as-root, but this is NOT recommended for security reasons.
+
+## Illegal Instruction
+
+This typically means you are trying to run it on a CPU that does not have [AES](https://en.wikipedia.org/wiki/AES_instruction_set).  This only happens on older version of miner, new version gives better error message (but still wont' work since your CPU doesn't support the required instructions).
+
+## Virus Protection Alert
+
+Some Virus protection software flag the miner binary as *Male Ware*.
+In this case the binary is moved to the quarantine area of the protection software.
+This is a wrong alert and not avoid by use.
+Add the binary to to protection software white list to solve this issue.s