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How to Fix C000021a Oxc0000135 Problem with SmartPCFixer?
Step 1 Download and install SmartPCFixer.
Step 2: Launch SmartPCFixer and click Quick Scan to run a free scan for your PC.
Step 3: After the whole scanning, please click Fix All to troubleshoot C000021a Oxc0000135 error automatically.
1. Check that if you have updated your windows in time.
Sometimes, people prefer to ignore microsoft's update remind messages. This may cause the terrible disaster for your PC. Please click Start, Control panel, System Security, windows update step by step. Then click check for update to see if you have missed the latest update.
2. Uninstall the program which you have just installed.
Attention: Before you try to install a new program on your computer, please ensure that you download the program from its official website. Because the 3rd party website often bring virus or trajon for your computer.
3. Perform SFC utiltiy for your computer.
General speaking, if you have no idea of how to fix C000021a Oxc0000135 problems, we suggest you to do a sfc for your PC. This procedure will help you fix most dll error. System File Checker is a utility in Windows that help people scan damaged system files and fix it automatically. Pay attention that corrupted systems files may bring a huge disaster for your windows.
Do as the following steps (Windows 7 or Windows Vista)
1. Click "Start" Button, and type CMD in the searching box. Right-click "CMD", then run as administrator.
2. Type sfc /scannow and press "Enter" button
3. After the process is finished, you may receive one of the following messages:
- Windows Resource Protection did not find any integrity violations. (It indicates that you don't have corrupted windows files.)
- Windows Resource Protection could not perform the requested operation.
- Windows Resource Protection found corrupt files and successfully repaired them.
- Windows Resource Protection found corrupt files but was unable to fix some of them. (In this situation, you had better do a system restore.)
Clean registry: Fix registry errors and deletes dead keys or values such as startup entries that a 3rd party application forgot to delete, which could lead to problems during startup. It also effectively remove invalid file type pointers and orphaned entries within the list of installed applications which may cause problems when installing or uninstalling applications.
Dll Fixer: Have you ever been bothered by dll missing error? Luckily for you, with SmartPCFixer, you will never be annoyed by dll errors. SmartPCFixer has Dll Download function which is capable of downloading and registering missing dll files for you with simple clicks.Speed up PC: Designed for troubleshooting blue screen error, repairing access violations issue and fixing application not responding error, SmartPCFixer will always offers users the totally new experience. Just install it and give it a shot.
300 MHz Processor,
256 MB RAM,
50 MB HDD
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If all the above steps still doesn't work, please try to do a system restore for your computer. SmartPCFixer is also able to perform a system restore for you.