545 (0x221) problems are quite common on many Windows computers. These problems are normally shown when you are using various Windows Programs at the same time. The error may occur at any time and is not that difficult to troubleshoot if you know how.

Problems of Encountering 545 (0x221) Error Messages:

  • PC program lock-ups or Cannot run PC software
  • Pop up errors and Slow PC performance
  • System freezes and blue screen
  • Shutdown or startup problems
  • Installation errors or computer virus

Suggestions for avoiding 545 (0x221) problem

a.Choose a useful computer optimizer software to do daily computer scan.
b.Check if your computer is infected with virus or trajon regually.
c.Make sure that you have updated your windows.

Instructions of repairing 545 (0x221) with simple steps:

1. Download and install SmartPCFixer to resolve 545 (0x221) error.


2. Click on quick scan button to start a complete system scan. You can alsocustomize the scan at this stage as per your wish.

quich scan

3. Click Fix all to remove 545 (0x221) error completely.

Still Cannot Fix 545 (0x221) Problem?

In this situation, perform a system restore for your PC is a good choice. 

1. Click Start Button and type system restore in the searching box.

2. Click System Restore and then follow the steps in the wizard to choose a restore point.


545 (0x221) error can never be ignored when you come across it on your PC. If 545 (0x221) error cannot be fixed in a effective way, you may received more severe computer problems. Therefore, for the sake of computer security and personal information, you need to get rid of 545 (0x221) error as soon as possible with the guide in this post. As a known PC optimizer, SmartPCFixer is obviously a good alternative for people to solve 545 (0x221) errors.

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